All Canplas Endura Grease Interceptors are tested and certified to standard PDIG101 of the Plumbing and Drainage Institute. Made of Engineered Thermoplastic, the Endura will not rust, peel or warp. Capable of supporting 440 lbs. across the lid , the Endura can be installed on the floor, semi-recessed or completely in the floor due to its unique reinforcing ribs. The O-ring sealing gasket is installed in a channel within the lid providing a positive, airtight seal reducing the chance of liquid solids, or odor escaping. Also has a 10 year manufacturer warranty. Has a flow rate of 20 gallons per minute, holds 40 lbs. of grease.