Standard Unit connects to the kitchen sink. Can be installed on the floor, partially in the floor or fully recessed. One piece baffle assembly. Cover is removable for easy cleaning -- only one center bolt. PDI certified. Acid resistant coated steel with Epoxy Gray Finish. Supplied with an external cast iron flow restrictor to allow water to flow through at appropriate rate. Unthreaded units used for installations where rubber gaskets can be used to connect interceptor to piping. Threaded units used for installations where interceptors need to connect with threaded piping. Professional installation is recommended. Water flow rate: 25 gallons per minute. Grease capacity: 50 lbs. 26"Wx161/2"Dx161/2"H (unthreaded units are 2" wider). 98 lbs.