Product Type Suspended Vertical Hydronic Wall & Ceiling Unit Heater, Air Flow Direction Vertical, Heating Method Steam, Water, Output @ 2 PSI Steam 249,800 BtuH, Output @ 200 F Water 180,100 BtuH, Air Flow 4,180 cfm, Fan Phase 1, Overall Height 15 1/8 in, Overall Width 37 1/2 in, Overall Depth 37 1/2 in, Amperage 3.6 A, Coil Type Rectangular, Connection Size 2 in, Connection Type Threaded Male NPT, Fan Diameter 25 1/4 in, Fan Guard Type No Guard, Flow Rate 18.56 gpm, Frequency 60 Hz