The Everbilt Split Sump and Sewage Basin Cover will provide a gas tight fit to your Everbilt Sump or Sewage basin. The cover comes with several molded slip type flanges providing installation options for a sump or sewage pump application. The cover includes 8- stainless steel washers and bolts allowing it to be secured to the basin. In addition, the cover comes with a roll of sealing tapes that provides a seal protecting against noxious or radon gas. It also prevents offensive odor emissions from your sump or sewage basin. The unique split cover design allows for pump removal without needing to remove the entire cover. The vent pipe remains in place providing easy access to the sump or sewage pump for maintenance or replacement. The Everbilt Split Sump and Sewage Basin cover is injection molded structural foam polyethylene and provides superior structural toughness, safety and reliability.