Product Type Suspended Horizontal Hydronic Wall Ceiling Unit Heater Air Flow Direction Horizontal Heating Method Water Output @ 200 F Water 18 400 BtuH Air Flow 500 cfm Fan Phase 1 Overall Height 16 in Overall Width 18 in Overall Depth 9 1/2 in Amperage 0.8 A Coil Type Serpentine Connection Size 3/8 in Connection Type SWT on Connection Fan Diameter 10 in Fan Guard Type OSHA Compliant Guard Flow Rate 1.9 gpm Frequency 60 Hz Heater Voltage 120 V AC Heating Capacity 18 400 BtuH