Important Info
Please use the riser sizer below for any sizing questions you may have. This calculator should answer any and all questions.The 24" x 14" septic tank riser kit raises your septic system access point to ground level, making inspections, pumping, and servicing more convenient. This mid-height riser configuration is ideal for tanks at a moderate depth that need improved accessibility without the height of larger riser assemblies.
This kit includes a 24" diameter riser, a secure cover, and all necessary installation hardware. Each component is made from heavy-duty, UV-resistant polyethylene, designed to withstand long-term outdoor exposure, moisture, and soil contact without rusting or corroding. The fitted cover helps protect against water intrusion and restricts unauthorized access.
Key Features:
24" diameter riser with 14" height for septic tank access
Heavy-duty, corrosion-resistant polyethylene construction
Tight-fitting cover for added safety and protection
Compatible with most standard septic tank openings (verify measurements before purchase)
Includes installation hardware
Installation Notes:
This riser kit can be installed on both new and existing septic systems. Before ordering, confirm your tank opening size and required riser height. Professional installation is recommended to ensure proper sealing, compliance with local codes, and long-term reliability.
Routine inspections of the riser and cover will help maintain system integrity and prevent water intrusion.
Note: Dimensions shown are for the kit base. This model includes a 3" safety pan with an inner diameter of 20" due to a slight bevel. Dome lids add approximately 1" to overall height. Upgrades to flat lids are available for an additional cost. Remove any existing concrete lid before installation. Please confirm diameter and height before ordering. Return shipping costs for incorrectly ordered sizes are the customer’s responsibility.
Can I install this on my concrete tank?
Yes you can. You will receive the sealant, and stainless steel screws when you purchase the 24"x 14" Flat Lid Riser System. We have videos on Youtube that can help you out with the installation.
Riser Installation
Will the 24” fit the square lids
our riser kits come with tank adapter rings designed to be installed around any round or square opening in your tank lid. However the size of riser kit you purchase will depend on the size of your square opening. For instance, this 24 inch Riser Kit will fit around square openings up to 17 inches across (if you measure the length of one side, assuming it's square) In any case, i highly recommend using our Riser Fit Guide & Calculator to determine the best size riser kit for your tank. Additionally, you could also reach out to us if you have further questions!
Does this kit include the butyl seal and screw kit?
It comes with screws and sealant. We don't use butyl to seal the risers to the tank never have it doesn't provide a good enough seal for water. We use roofing tar or liquid nails which we give that way no screws are needed to anchor it down.
How many gallons does this tank hold ?
This is not a septic tank it is a septic riser. Its not designed to hold water.
