Heated 11 In.H 48 In.W 17.5 In.D Stel Air Curtain For Frame Opening Width 4 ft Mounting Height for Temperature Control 12 ft Overall Depth 17 1/2 in Overall Height 10 5/8 in Overall Width 48 in Profile Type Standard Profile Heated/Not Heated Heated Maximum Air Velocity 3 855 fpm Mounting Height for Insect Control 10 ft Maximum Air Volume 1 442 cfm Nameplate Voltage 208V AC Air Temperature Rise 33 Degrees F Sound Level @ 10 ft 66 dBA Housing Color Black Phase 1