We have with us Rough in Box for 3450/AFH Series heaters. Model Box 3450/Box AFH is a Fan Forced Heater Accessory manufactured by TPI.
Heater-Store or any of it's affiliates are not responsible for damages or injury caused by wrongful installation or application of this product.
23-1/16" H x 14-1/4" W x 4-1/4" D