Product Type Suspended Horizontal Hydronic Wall & Ceiling Unit Heater, Air Flow Direction Horizontal, Heating Method Steam, Water, Output @ 2 PSI Steam 72,000 BtuH, Output @ 200 F Water 52,300 BtuH, Air Flow 1,100 cfm, Fan Phase 1, Overall Height 21 3/4 in, Overall Width 18 3/8 in, Overall Depth 11 1/16 in, Amperage 1.4 A, Coil Type Header, Connection Size 1 1/4 in, Connection Type Threaded Female NPT, Fan Diameter 14 in, Fan Guard Type OSHA Compliant Guard, Flow Rate 5.3 gpm, Frequency 60 Hz