Product Type Suspended Horizontal Hydronic Wall & Ceiling Unit Heater, Air Flow Direction Horizontal, Heating Method Steam, Water, Output @ 2 PSI Steam 156,000 BtuH, Output @ 200 F Water 113,000 BtuH, Air Flow 2,600 cfm, Fan Phase 1, Overall Height 27 3/4 in, Overall Width 23 3/8 in, Overall Depth 13 3/4 in, Amperage 4.5 A, Coil Type Header, Connection Size 1 1/2 in, Connection Type Threaded Female NPT, Fan Diameter 18 in, Fan Guard Type Standard Guard, Flow Rate 11.3 gpm, Frequency 60 Hz