Low pressure gas connection – 1/2 PSI;High pressure gas connection – 2 PSI;Stainless steel surface mount enclosure;CSA approved for indoor and outdoor use2 x 3/8″ Quick Disconnects-60,000 BTU Natural Gas – each outlet at 0.6 SP. at 7″ w.c.,90,000 BTU Propane – each outlet at 1.53 SP. at 11″ w.c.;2 x 1/2″ Quick Disconnects-125,000 BTU Natural Gas – each outlet at 0.6 SP. at 7″ w.c,187,000 BTU Propane – each outlet at 1.53 SP. at 11″ w.c.;1/2″ NPT rear or bottom inlet connection;Dimensions: 8 1/2 ″ x 5 1/4″ x 3 1/8″;Temperature Rating: Approved to -40 Degree C;Complete with Adjustable Standoffs (3/4” – 1 1/2“) for siding or stone surface applications