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