Recessed Electric Wall-Mount Heater, Commercial/Industrial, 3600/4800 Watts, 12,287/16,382 BtuH, Heater Voltage 208/240 V AC, Electric Heater Phase 1, Wall Opening Width 14-5/16 In., Color White, 17.2/20.0 Amps AC, Wall Opening Depth 3-7/8 In., Wall Opening Height 18-1/4 In., Mounting Type Recessed, 60 Hz, Air Temp. Rise 132 Degrees F, Grille Material Steel, Grille Width 15 5/16 in, Grille Depth 1 1/2 in, Grille Height 19 3/16 in, Housing Width 14 5/16 in, Housing Depth 3 7/8 in