TW-Risers by Infiltrator are made from glass-reinforced polypropylene, providing superior strength and durability. Available in green or black with a 24-inch diameter, making them ideal for use with any concrete or plastic tank. The slip-resistant lids are fastened using stainless steel screws and are further secured by indexing structural ribs, that lock the riser into place.
TW-Riser system lids are made from virgin polyethylene, providing strength and increased impact resistance. The improved urethane gasket creates a built-in watertight seal. Lids can withstand a wheel load comparable to that of a full-size pickup truck. View TW-Riser Cut Sheet
EZset 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 lids are fastened using stainless steel screws and can be further secured by installing locking rings.
Available in 20”, 24” and 30” riser systems. View EZset Cut Sheet
Infiltrator Water Technologies is proud to offer our new 24” riser Safety Lid System. These fiberglass reinforced lid systems are a strong secondary level of protection if a primary riser lid is unknowingly damaged or removed. The Safety Lid System fits in the uppermost riser stack of both our TW and EZset 24” x 12” and 24” x 18” risers and prevents unintended entry into the tank.