20" x 8" Septic Tank Riser Kit

The 20" x 8" septic tank riser kit is designed to raise your septic system access point slightly above ground level, making inspections, pumping, and maintenance more convenient while maintaining a low-profile appearance. This height is ideal for systems that need only a small lift to improve accessibility.

This kit includes a 20" diameter riser, a secure cover, and all necessary installation hardware. Each component is made from heavy-duty, UV-resistant polyethylene, engineered to withstand long-term outdoor exposure, moisture, and soil contact without rusting or corroding. The fitted cover helps protect against water intrusion and limits unauthorized access.

Key Features:

• 20" diameter riser with 8" 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 new or existing septic systems. Before ordering, confirm your tank opening size and riser height requirements. Professional installation is recommended to ensure a proper seal, compliance with local codes, and long-term reliability.

Routine inspections of the riser and cover will help maintain optimal performance 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.