This is the official product video for the Norwesco Manhole Extension 20 InchDia. x 24 InchH. Full specifications, dimensions, and live pricing are on the product page.
Stand above the work... The Norwesco Manhole Extension is a 20-inch diameter by 24-inch tall steel riser that raises an existing manway collar to the height your installation needs. At roughly 15 lb empty with a 20 x 20 inch footprint, it seats onto a compatible Norwesco manhole opening to add reach for buried or recessed access points, provide deeper cover over an opening, or create clearance where the tank sits below finished grade. This is an access riser — not a lid, not a storage vessel. Pair it with the Norwesco manhole assembly it was built to seat on, and confirm the 20-inch collar and 24-inch height suit your site. Norwesco Manhole Extension 20 InchDia. x 24 InchH. Raise Your Access. OneSource Plastics.