Recessed Electric Wall-Mount Heater Architectural Tamper Resistant 4000 Watts 13 652 BtuH Heater Voltage 277 V AC Electric Heater Phase 1 Wall Opening Width 14-1/4 in Color Bronze 14.4 Amps AC Wall Opening Depth 4-1/4 in Wall Opening Height 23-1/16 in Mounting Type Surface and Recessed 60 Hz Air Temp Rise 51 Degrees F Grille Material Aluminum Grille Width 17 7/16 in Grille Depth 7/8 in Grille Height 25 1/16 in Housing Width 17 7/16 in Housing Depth 4 1/2 in