The Delta 1 TRP the Sink II is made up of durable ABS plastic with thermo-formed, black electrostatically painted surface that is resistant to chemicals and rust.It features 3 tempered valves and 1 untempered water outlet with 3/4" garden hose threadThe rate of water output is 1-7 gallons per minute, which is ensured by a vacuum breaker, the check stop valves, and a dual scale 3" thermostatic manual mixerThe ripped bottom of this darkroom sink is used for draining and complete circulation of waterIt is 6" deep, and it has a capability to hold four 11 x 14" or  two 6 x 20" traysIt fits into the Delta Steel Stand