Recessed Electric Wall-Mount Heater, Architectural, 4000 Watts, 13, 658 BtuH, Heater Voltage 277 V AC, Electric Heater Phase 1, Wall Opening Width 14-3/16 In., Color Brown/Aluminum, 14.4 Amps AC, Wall Opening Depth 4 In., Wall Opening Height 19-7/16 In., Mounting Type Surface and Recessed, 60 Hz, Air Temp. Rise 72 Degrees F, Grille Material 18 ga Steel, Grille Width 15 7/8 in, Grille Depth 1 in, Grille Height 20 13/16 in, Housing Width 13 7/8 in, Housing Depth 3 3/4 in, Housing Height 19 5/16 in