Recessed Electric Wall-Mount Heater, Commercial/Industrial, 3600/4800 Watts, 12,287/16,382 BtuH, Heater Voltage 240/277 V AC, Electric Heater Phase 1, Wall Opening Width 14-5/8 In., Color White, 15.0/17.2 Amps AC, Wall Opening Depth 3-7/8 In., Wall Opening Height 18-1/4 In., Mounting Type Surface and Recessed, 60 Hz, Air Temp. Rise 132 Degrees F, Grille Material Steel, Grille Width 15 3/4 in, Grille Depth 1 1/2 in, Grille Height 19 1/4 in, Housing Width 14 5/16 in, Housing Depth 3 3/4 in