Function: Two different sizes of Access Extensions can raise the height of your cover in combinations of 7? and 16?, up to a maximum burial depth of 36?. Extensions feature a flat round boss on two sides to facilitate fitting installation or pump-mounting.
Secure-Seal: Access Extensions and Covers are custom roto-molded using high-density polyethylene with U.V. inhibitors. They feature a stop-bead and backup dam along with a custom Nitrile rubber gasket to ensure a water-tight seal. Secure seals prevent contents from escaping tank and prevent excess rainwater from entering and flooding tank. This protects both your drinking water and your property!
Locking Design: All covers and extensions lock onto the tank body and to each other using three bayonet keys. Nylon ties can be used to lock covers through the locking ears without using metal fasteners that can corrode and fail. Locking your tank prevents unauthorized access and accidents. Ace Roto-Mold?s Secure-Seal accessories keep your family, health, property, and investment safe and secure.