Lightweight polypropylene provides easy handling, durability and strength. Removable inlet and outlet baffles allow convenient cleaning. Ribbed design reinforces and adds strength. Can be installed on the floor, partially in the floor or fully recessed. For recessed installations, lid can only withstand a load of 440 lbs. and can support light floor traffic only. Quick disconnect latching system. Recessed silicone gasket in lid provides an airtight seal and prevents leaks and odors. Standard mechanical no-hub connection. Installation instructions included. Professional installation is recommended. P.D.I. approved. IAMPO listed. 18"Wx24"Dx17"H. 28 lbs.