Low pressure gas connection – 1/2 PSI;Fire rated black ABS rough in box;Lockable stainless steel door;CSA approved indoor / outdoor use;60,000 BTU Natural Gas at 0.6 SP. at 7″ w.c.;90,000 BTU Propane at 1.53 SP. at 11″ w.c.;3/8″ or 1/2″ NPT rear or top inlet connection;3/8″ Quick disconnect, male plug included;Box Dimensions: 3 1/2” x 5 1/2” x 3 1/2“;Door Dimensions: 4 1/4” x 6 1/2” x 1/2“;Temperature Rating: Approved to -40 Degree C