20" x 38" Septic Tank Riser Kit

The 20" x 38" septic tank riser kit is designed to bring your septic system access point above ground level, making inspections, pumping, and maintenance more convenient—especially for tanks installed deeper underground. This tall riser configuration reduces or eliminates the need for excavation during servicing.

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

Key Features:

• 20" diameter riser with 38" height for deep-set septic systems

• Durable, 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 is suitable for new or existing septic systems. Before ordering, confirm your tank opening size and the riser height needed for your setup. Professional installation is recommended to ensure proper sealing, code compliance, and long-term performance.

Routine inspections of riser components and seals will help maintain system reliability 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.