18 in x 30 in Simplex Sewage Basin with 2 in and 3 in Vent Solid Cover

This sewage basin and cover system is engineered to collect and contain wastewater in residential and light commercial applications. Built from polyethylene structural foam, it provides durable strength and long‑lasting performance underground. The basin includes integrated 2 in and 3 in vent connections as well as a 2 in discharge flange, helping support flexible piping configurations. A snap‑in 4 in inlet hub facilitates secure connection of incoming pipe. With one‑piece construction and necessary hardware included, it helps maintain a watertight and gas‑tight installation when properly installed.