Septic riser kits

Septic systems are an essential part of many homeowners’ lives, but they can also cause some headaches when things go wrong. One of the most common issues with septic systems is a ...

Septic riser kits. About this item. This kit includes a 24" adapter ring, a 24"x6" riser, 24" heavy duty cover, 24" safety screen, an adapter ring installation kit, and stainless steel screws. Additional 24" Polylok risers can be purchased and stacked on to this kit. This package gives you approximately 8" in height. Optional foam gasket sold separately.

Build A 12'' Riser Kit. Septic Tank Risers and Lids. Corrugated Pipe Products. Septic Tank Covers. Air Pump Housings. Decorative Rock Covers. Pagoda Vent Covers. ... Polylok 24" Heavy Duty Septic Tank Riser Lid. Item #: 3008-WEST. Product Video . Our Price: $ 73.50 MSRP: $89.00 . View Product . Polylok 24" Septic Tank Riser Safety …

The 20" x 5" Septic Tank Riser Kit is a complete septic riser kit that comes with everything you need to install and bring your septic system to grade. Choose a variant Flat Lid - $185.00 Domed Lid - $162.00EZset™ Lids & Risers. EZset™ septic tank lids and risers by Infiltrator are made from glass reinforced polypropylene, providing superior strength and durability. They come in green or black and in 20”, 24”, and 30” diameters, making them ideal for use with any concrete or plastic tank. The slip resistant septic tank lids are fastened ...These complete septic tank riser packages come with everything you need to install a septic tank riser system on your existing concrete or plastic septic tank. These riser packages are available in 20'' and 24'' diameter with several different height options. Septic Solutions offers fast and free same day shipping on all of our Polylok septic ...These complete septic tank riser packages come with everything you need to install a septic tank riser system on your existing concrete or plastic septic tank. These riser packages are available in 20'' and 24'' diameter with several different height options. Septic Solutions offers fast and free same day shipping on all of our Polylok septic ...The NEW standard in septic tank riser safety & FREE SHIPPING Includes: safety barrier, riser, cover, mounting fasteners, sealant, and illustrated instructions. Plastic adapter ring is 30 1/4" x 30 1/4" with a 23.5" riser ring inner diameter.4.5 40 ratings. $26400. This kit includes a 20" adapter ring, a 20"x12" riser, 20" riser cover, 20" safety screen, an adapter ring installation kit, and stainless steel screws. Additional 20" Polylok risers can be purchased and stacked on to this kit. This package gives you approximately 14" in height.Used to raise tank opening to ground level for easy maintenance. Fits all opening shapes up to 24 in. (e.g. round, square, rectangular, etc.) Base flange is 30.25 in. x 30.25 in. with a 23.5 in. riser ring inner diameter. Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, & Sealant.Visit the Aero-Stream Store. 4.8 46 ratings. $40400. The standard in septic tank riser safety. Includes: safety barrier, riser, cover, mounting fasteners, sealant, and illustrated instructions. Base flange is 30 1/4" x 30 1/4" with a 23.5" riser ring inner diameter. Complete and ready for installation (assembly required)

With the rising popularity of meal-kit services like Blue Apron, professional food critic Mark Bittman evaluates their value. By clicking "TRY IT", I agree to receive newsletters a...24 in. Round Domed Lid for Septic Tank Riser in Yellow. Quick View Part #T24RPSLID Item #4131481 Mfr. Part #24-RPSLID-YEL 4.9 out of 5 Customer Rating. Info Requires ... 26-3/4 in. ABS Bolt Down Kit for 24 in. Riser Tank Adapters. Quick View Part #OPRTA24BDKIT Item #1638683 Mfr. Part #PRTA24BDKIT 5 out of 5 Customer Rating. …This riser kit requires a flat surface at least 23 inches to 28 inches in diameter to attach the base flange. Base flange is 30.25″ x 30.25″ with a 23.5″ riser ring inner diameter. Heights from 7″ up to 50″ Available (contact us for configurations beyond 50″) Fits all opening shapes up to 24″ e.g. round, square, rectangular, etc.Septic tank risers are designed to bring the access of a buried septic tank up to grade for easy access for routine pumping and maintenance. Adding risers to your septic tank eliminates the need for you to pay for the pumping service to dig up your tank or the need for you to have to do the digging yourself.When it comes to restoring or upgrading your vehicle, a complete car kit can be a great option. These kits typically include all the necessary components and accessories to transfo...Septic tank riser kits are used to raise the tank opening to ground level for easy maintenance. Our durable plastic septic tank riser kits are 100% Made in USA. Bring …This means that a 24’’x 17’’ riser kit has an inner diameter of 24 inches and a height of 17 inches. The bottom ring of the riser kit is what attaches the assembly to the septic tank. There must be enough area around the access port to properly attach the ring to the septic tank. For example, a 24’’x 17’’ kit has an adapter ring ...United has debuted its newest amenity kits that have been designed in partnership with the popular luggage brand Away. We may be compensated when you click on product links, such a...

Home. Septic Parts. Septic Tank Risers. Build A 20'' Riser Kit. Build Your Own 20'' Septic Tank Riser Kit. Pick and choose from the options below to build your own custom 20'' …Drain Field Cleaner Tablets by Dr Pooper. Clears Septic Tanks and Drain Fields of Tough Clogs, Scum, Sludge AND Eliminates Odors FAST - Aerobic & Anaerobic Systems - Easy to Use, Just Flush. 2,486. 4K+ bought in past month. $5700 ($57.00/Count) List: $59.97. $54.15 with Subscribe & Save discount.Used to raise tank opening to ground level for easy maintenance. Fits all opening shapes up to 24 in. (e.g. round, square, rectangular, etc.) Base flange is 30.25 in. x 30.25 in. with a 23.5 in. riser ring inner diameter. Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, & Sealant.In this video we bring you along as i install a new Septic Riser lid kit. We purchased the kit through Home Depot but I have inserted a link below for the sa...Diameter X 10 In. Septic Tank Riser Kit. 6. • Fits all opening shapes up to 24 in. • Plastic adapter ring is 30.25 in x 30.25 in with a 23.5 in riser ring inner diameter. • Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, Sealant. Aero-Stream. 23.5 In. Diameter X …

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Yes. The Polylok Septic Tank Risers come with screws to connect them to each other. For further questions contact us at 1-877-925-5132 or [email protected]. THE POLYLOK SEPTIC TANK RISER ADVANTAGE. There are many different types and styles of riser systems on the market today. The Polylok septic tank risers are simply the best your ...Visit the Polylok Store. 75. $6750. This model has been replaced with part number: 3009-NG as of 2021. Accepts Polylok 20" Riser Safety Screens. Made of high density polyethylene which won’t shatter. Structural ribs inside prevent frost from adhering to the riser in frost prone areas. Made in the USA.Used to raise tank opening to ground level for easy maintenance. Fits all opening shapes up to 24 in. (e.g. round, square, rectangular, etc.) Base flange is 30.25 in. x 30.25 in. with a 23.5 in. riser ring inner diameter. …AS Series Septic Tank Riser Kits are not compatible with Norwesco branded tanks & most poly tanks without modifications to tank. This riser kit requires a flat surface at least 24 inches to 28 inches in diameter to attach the adapter flange. Used to raise tank opening to ground level for easy maintenance ;

20" x 44" Septic Tank Riser Kit. Tuf-Tite. $410.00 - $425.00. If your septic tank has a square opening in it's concrete lid or if you're trying to adapt from another type of riser, measure diagonally across to ensure these 20-inch riser kits fit your tank opening.Septic tanks are a great way to manage wastewater and sewage in rural areas where there is no access to a municipal sewer system. While septic tanks are an effective solution for w...The 24" x 20" Septic Tank Riser Kit is a complete septic riser kit that comes with everything you need to install and bring your septic system to grade. Choose a variant Flat Lid - $295.00 Dome Lid - $282.00Prior to purchasing a septic tank riser kit, there are key measurements to take into consideration. The primary measurement will be the size of your opening(s) to ensure our kits are compatible. This measurement will either be the diameter (circular openings) or a combination of length and width (square/rectangular openings).First aid kits are essential in the workplace in case of an injury or emergency. Find the best first aid and medical emergency supplies for businesses. If you buy something through...The Tuf-Tite Septic Tank Riser Kit elevates your access point, making routine inspections, pump-outs, and maintenance tasks a swift and clean process. Durable Construction: Crafted from high-density polyethylene (HDPE), this kit is built to withstand the harshest environmental conditions and resist corrosion, ensuring its longevity and reliability.This kit includes. 1 - Polylok Round Riser Adapter Ring - designed to connect the Polylok Septic Tank Risers or Lids to an existing concrete tank with square or round openings. The adapter ring mounts directly to the tank and accepts the risers and lids as attachments. 20" Adapter Ring fits a maximum hole size of 20" diameter if it is a round hole or a 20" …Turn riser adapter ring over and cut along score line to remove this ring. 4. Drill hole locations in tank surface and set anchors in place. Anchors can be any of the commonly available anchors. Anchor kit (optional) is available and includes the drill bit, concrete anchors, bolts, and riser-sealing strip. 5.Aug 7, 2015 · The standard in septic tank riser safety ; Septic tank riser kits are used to raise the septic cover to ground level for easy maintenance. Base flange is 30.25" x 30.25" with a 23.5" riser ring inner diameter. Stop paying the pumper to dig, easy DIY installation can be completed under an hour ; Proudly designed & manufactured in USA The 20" x 20" Septic Tank Riser Kit is a complete septic riser kit that comes with everything you need to install and bring your septic system to grade. Order before 2PM for same-day dispatch! Please read the description & ensure that you are ordering the correct diameter and height riser kit. The Polylok risers come in 6’’ tall and 12’’ tall and in 24’’ diameter and 20’’ diameter. They are stackable and each unit comes with a pre-installed gasket and stainless steel screws for mounting. Use the height …

24 in. Round Domed Lid for Septic Tank Riser in Yellow. Quick View Part #T24RPSLID Item #4131481 Mfr. Part #24-RPSLID-YEL 4.9 out of 5 Customer Rating. Info Requires ... 26-3/4 in. ABS Bolt Down Kit for 24 in. Riser Tank Adapters. Quick View Part #OPRTA24BDKIT Item #1638683 Mfr. Part #PRTA24BDKIT 5 out of 5 Customer Rating. …

Fits all opening shapes up to 24 in. (e.g. round, square, rectangular, etc.) Plastic adapter ring is 30.25 in. x 30.25 in. with a 23.5 in. riser ring inner diameter. Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, & Sealant. A septic tank riser makes installation of the Septic System Saver easier and even faster.Yes. The Polylok Septic Tank Risers come with screws to connect them to each other. For further questions contact us at 1-877-925-5132 or [email protected]. THE POLYLOK SEPTIC TANK RISER ADVANTAGE. There are many different types and styles of riser systems on the market today. The Polylok septic tank risers are simply the best your ...The 20" x 20" Septic Tank Riser Kit is a complete septic riser kit that comes with everything you need to install and bring your septic system to grade. Order before 2PM for same-day dispatch! Please read the description & ensure that you are ordering the correct diameter and height riser kit.Diameter X 10 In. Septic Tank Riser Kit. 6. • Fits all opening shapes up to 24 in. • Plastic adapter ring is 30.25 in x 30.25 in with a 23.5 in riser ring inner diameter. • Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, Sealant. Aero-Stream. 23.5 In. Diameter X 16 In.Septic tanks are a great way to manage wastewater and sewage in rural areas where there is no access to a municipal sewer system. While septic tanks are an effective solution for w...Visit the Polylok Store. 75. $6750. This model has been replaced with part number: 3009-NG as of 2021. Accepts Polylok 20" Riser Safety Screens. Made of high density polyethylene which won’t shatter. Structural ribs inside prevent frost from adhering to the riser in frost prone areas. Made in the USA.If you’re in the market for a new electric riser recliner, finding the best deals can help you save money while still getting a high-quality product. Before making a purchase, it’s...24" x 26" Septic Tank Riser Kit Overview: Our septic tank riser kits are measured by their inner diameter and height. The first number in their names is their inner diameter in inches, and the second number is their height in inches. This means that a 24’’x 26’’ riser kit has an inner diameter of 24 inches and a height.Yes. The Polylok Septic Tank Risers come with screws to connect them to each other. For further questions contact us at 1-877-925-5132 or [email protected]. THE POLYLOK SEPTIC TANK RISER ADVANTAGE. There are many different types and styles of riser systems on the market today. The Polylok septic tank risers are simply the best your ...

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A septic system and drainfield collectively is the most preferred way to deal with sewage waste in residential communities. Installing it yourself is not an impossible DIY job; in ...A septic tank riser is a concrete or plastic pipe that runs vertically from the pump-out openings or access ports at the top of a septic tank to about ground level. A simple and seemingly common-sense concept, risers are often missing from standard septic tanks, particularly older models. Risers are made from material that offers …Excavate the area around the septic tank lid, creating a workspace. Remove the existing lid and clean the tank’s surface. Place the septic riser kit’s adapter ring onto the tank’s access opening, ensuring a snug fit. Install the riser onto the adapter ring, following the manufacturer’s instructions. Attach the new lid to the riser ...SeptiComplete Premium Powder: 2 lbs of Septic Tank & Septic Line Cleaner with Dosage Scoop: Use for Clogged Toilet Solutions, Plastic Septic Tank, and Septic Tank Riser. Unscented $33.10 $ 33 . 10 ($1.03/Ounce)1-48 of 106 results for"septic tank riser kit" Results. Price and other details may vary based on product size and color. Overall Pick. Amazon's Choice: Overall Pick. Tuf-Tite …SeptiComplete Premium Powder: 2 lbs of Septic Tank & Septic Line Cleaner with Dosage Scoop: Use for Clogged Toilet Solutions, Plastic Septic Tank, and Septic Tank Riser. Unscented $33.10 $ 33 . 10 ($1.03/Ounce)$25851. The standard in septic tank riser safety. Septic tank riser kits are used to raise the septic cover to ground level for easy maintenance. Base flange is …This kit includes a 24" adapter ring, a 24"x2" riser, 24" riser cover, an adapter ring installation kit, and stainless steel screws. Additional 24" Polylok risers can be purchased and stacked on to this kit. This package gives you approximately 4" in height. Optional foam gasket sold separately. ….

The 16" x 14" Septic Tank Riser Kit is a complete septic riser kit that comes with everything you need to install and bring your septic system to grade. Order before 2PM for same-day dispatch! Please read the description & ensure that you are ordering the correct diameter and height riser kit.When it comes to restoring or upgrading your vehicle, a complete car kit can be a great option. These kits typically include all the necessary components and accessories to transfo... View product. $150.00. View product. Key Features. Specs. Warranty. What's In The Box. The Tuf-Tite Septic Tank Riser Kit is the answer to simplifying access to your septic tank and enhancing the overall efficiency of your septic system. This kit is an indispensable addition for homeowners and professionals looking to make septic maintenance a ... AS Series Septic Tank Riser Kits are not compatible with Norwesco branded tanks & most poly tanks without modifications to tank. This riser kit requires a flat surface at least 24 inches to 28 inches in diameter to attach the adapter flange. Used to raise tank opening to ground level for easy maintenance ;Visit the Aero-Stream Store. 4.8 46 ratings. $40400. The standard in septic tank riser safety. Includes: safety barrier, riser, cover, mounting fasteners, sealant, and illustrated instructions. Base flange is 30 1/4" x 30 1/4" with a 23.5" riser ring inner diameter. Complete and ready for installation (assembly required)This septic tank riser pipe is durable HDPE double wall pipe with smooth interior. It is more durable than concrete septic tank riser pipe. ... The kits can be buried if desired. Feel free to call us at (877)-254-7093 or email …Septic Tank Riser Installation Kit. 17. (19) Questions & Answers (3) Hover Image to Zoom. $ 30 49. Pay $5.49 after $25 OFF … A Septic Tank Riser is a plastic or concrete piece of pipe that is installed from the top of the Septic Tank Pump-Out or Access Port to the surface. Older septic tanks were often installed without a riser meaning their access ports were underground and required digging of the topsoil for access. CALL NOW FOR SERVICE: 1 (855) 925-0760. Septic riser kits, Septic Tank Riser Kit. Item #1609213 | Model #AS-R26. Shop Aero-Stream. Fits all opening shapes up to 24 in. Base flange is 30.25 in x 30.25 in with a 23.5 in riser ring inner diameter. Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, Sealant. Stepper number input field with increment and decrement buttons., 20" x 12" Riser. The best just got better. You asked for it and now we have it. Polylok is proud to introduce our 1 foot tall by 20" riser. It has the same high quality as our 6" tall by 20" risers, but with fewer screws that you and your customers have to put together. Structural ribs inside prevent frost from adhering to the riser in frost ..., Key Features: Enhanced Access: Say goodbye to laborious and messy digging to reach your septic tank. The Tuf-Tite Septic Tank Riser Kit elevates your access point, making routine inspections, pump-outs, and maintenance tasks a swift and clean process. Durable Construction: Crafted from high-density polyethylene (HDPE), this kit is built to ..., The 20" x 8" Septic Tank Riser Kit is a complete septic riser kit that comes with everything you need to install and bring your septic system to grade. Choose a variant Flat Lid - $190.00 Dome Lid - $172.00 , Build A 20'' Riser Kit. Build A 24'' Riser Kit. Build A 12'' Riser Kit. Septic Tank Risers and Lids. Corrugated Pipe Products. Septic Tank Covers. Air Pump Housings. ... Polylok 20" x 6" Septic Tank Riser Downloadable Documents. FileName; 3009_Spec: View: Download: Septic Tank Risers. Septic Tank Risers and Lids. 12" Diameter; 20" Diameter; 24 ..., Visit the Polylok Store. 4.5 186 ratings. $10000. This model has been replaced with part number: 3008-R12-NG as of 2021. Wall flats design will NOT accept Polylok 24" Riser Safety Screens. Please see Round Wall design (PN: 3008-RTR-NG) if using with 24" Polylok Safety Screens. Made of high density polyethylene which won’t …, 24" x 12" Riser (Round Wall) 1. 2. Show per page. Polylok, Inc. is an international supplier for the precast concrete and onsite wastewater industries, producing high-grade septic tank Solution and product., Pick and choose from the options below to build your own custom 24'' diameter Polylok septic tank riser kit! Septic Solutions offers fast and free same day shipping on all of …, Septic pneumonia refers to a lung infection complication causing sepsis, a systemic infection affecting the whole body, according to Mayo Clinic. Sepsis is a serious, life-threaten..., Highlights. Used to raise tank opening to ground level for easy maintenance. Fits all opening shapes up to 24 in. (e.g. round, square, rectangular, etc.) Base flange is 30.25 in. x 30.25 in. with a 23.5 in. riser ring inner diameter. Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, & Sealant., X 7 In. Septic Tank Riser Kit. Item # 1609207 |. Model # AS-R07. Shop Aero-Stream. 300+ views last week. Fits all opening shapes up to 24 in. Base flange is 30.25 in x 30.25 in with a 23.5 in riser ring inner diameter. Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, Sealant., The 24" x 11" Septic Tank Riser Kit is a complete septic riser kit that comes with everything you need to install and bring your septic system to grade. Order before 2PM for same-day dispatch! Please read the description & ensure that you are ordering the correct diameter and height riser kit., It streamlines the process, saving you time and effort. 20" x 2" Septic Tank Riser Kit PLEASE NOTE: Septic Riser Kits Come Supplied with (1) one tube of riser tar sealant Overview: Our septic tank riser kits are measured by their inner diameter and height. The first number in their names is their inner diameter in inches, and the second number ..., Features of Riser Kits. Raises the tank cover to ground surface to make maintenance simpler. Base flange is 30-1/4″x 30-1/4″ with a 23-1/2″ inner diameter. Covers all opening shapes such as square, round, rectangular, etc. up to 24″. Rated for foot traffic only. , AS-R26 Septic Tank Riser kit - 23.5" Diameter X 26" 4.9 out of 5 stars. 26. $452.00 $ 452. 00. FREE delivery May 7 - 9 . Small Business. Small Business. Shop products from small business brands sold in Amazon’s store. Discover more about the small businesses partnering with Amazon and Amazon’s commitment to empowering them., This Tuf-Tite riser is 24'' in diameter and 12'' tall. Tuf-Tite risers are stackable giving great flexibility when bringing your access to grade. Each riser locks into position and is fastened with screws .Made from of HDPE it is highly uv resistant and structurally strong. Tuf-tite 24x12 septic tank riser. 4.8 / 5., 24" x 26" Septic Tank Riser Kit Overview: Our septic tank riser kits are measured by their inner diameter and height. The first number in their names is their inner diameter in inches, and the second number is their height in inches. This means that a 24’’x 26’’ riser kit has an inner diameter of 24 inches and a height. , This means that a 24’’x 17’’ riser kit has an inner diameter of 24 inches and a height of 17 inches. The bottom ring of the riser kit is what attaches the assembly to the septic tank. There must be enough area around the access port to properly attach the ring to the septic tank. For example, a 24’’x 17’’ kit has an adapter ring ..., Septic tank riser kits are used to raise the tank opening to ground level for easy maintenance. Our durable plastic septic tank riser kits are 100% Made in USA. Bring …, 23.5 In. X 13 In. Septic Tank Riser Kit. 8. • Fits all opening shapes up to 24 in. • Base flange is 30.25 in x 30.25 in with a 23.5 in riser ring inner diameter. • Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, Sealant. Aero-Stream. 23.5 In. , View product. $150.00. View product. Key Features. Specs. Warranty. What's In The Box. The Tuf-Tite Septic Tank Riser Kit is the answer to simplifying access to your septic tank and enhancing the overall efficiency of your septic system. This kit is an indispensable addition for homeowners and professionals looking to make septic maintenance a ..., Septic tank risers are designed to replace existing concrete, fiberglass, or metal septic tank lids and bring the access to ground level. Are you fed up with having to dig up your …, Features of Riser Kits. Raises the tank cover to ground surface to make maintenance simpler. Base flange is 30-1/4″x 30-1/4″ with a 23-1/2″ inner diameter. Covers all opening shapes such as square, round, rectangular, etc. up to 24″. Rated for foot traffic only. , X 13 In. Septic Tank Riser Kit. 8. • Fits all opening shapes up to 24 in. • Base flange is 30.25 in x 30.25 in with a 23.5 in riser ring inner diameter. • Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, Sealant. Aero-Stream. 23.5 In. Diameter X 32 In., In this video we bring you along as i install a new Septic Riser lid kit. We purchased the kit through Home Depot but I have inserted a link below for the sa..., Item #:3017-R3. Our Price: $34.25 MSRP: $42.00. Add to Cart. Polylok 12" x 6" Septic Tank Riser. This Polylok riser is 12'' in diameter and 6'' tall. Polylok risers are stackable giving great flexibility when bringing your access to grade. Each riser locks into position and is fastened with included screws., Visit the Aero-Stream Store. 4.8 46 ratings. $40400. The standard in septic tank riser safety. Includes: safety barrier, riser, cover, mounting fasteners, sealant, and illustrated instructions. Base flange is 30 1/4" x 30 1/4" with a 23.5" riser ring inner diameter. Complete and ready for installation (assembly required), Diameter X 10 In. Septic Tank Riser Kit. 6. • Fits all opening shapes up to 24 in. • Plastic adapter ring is 30.25 in x 30.25 in with a 23.5 in riser ring inner diameter. • Includes Cover, Pipe, Base Flange, Safety Barrier, Hardware, Sealant. Aero-Stream. 23.5 In. Diameter X 16 In., These complete septic tank riser packages come with everything you need to install a septic tank riser system on your existing concrete or plastic septic tank. These riser packages are available in 20'' and 24'' diameter with several different height options. Septic Solutions offers fast and free same day shipping on all of our Polylok septic ..., Find Septic tank riser kit septic accessories at Lowe's today. Shop septic accessories and a variety of plumbing products online at Lowes.com., Yes. The Polylok Septic Tank Risers come with screws to connect them to each other. For further questions contact us at 1-877-925-5132 or [email protected]. THE POLYLOK SEPTIC TANK RISER ADVANTAGE. There are many different types and styles of riser systems on the market today. The Polylok septic tank risers are simply the best your ..., Highlights. Used to raise tank opening to ground level for easy maintenance. Fits all opening shapes up to 24 in. (e.g. round, square, rectangular, etc.) Base flange is 30.25 in. x 30.25 in. with a 23.5 in. riser ring inner …, These complete septic tank riser packages come with everything you need to install a septic tank riser system on your existing concrete or plastic septic tank. These riser packages are available in 20'' and 24'' diameter with several different height options. Septic Solutions offers fast and free same day shipping on all of our Polylok septic ...