Adjustable flue control for furnaces
Adjustable flue control for furnaces
Apparatus for controlling flow of combustion products
Apparatus for controlling flow of combustion products
Apparatus for fuel economy
Automatic draft controller
Candle arrangement
Draft air secondary combustion apparatus for stoves
Draft hood and damper assembly for fuel fired heating apparatus
Energy efficient damper for a furnace
Energy efficient damper for a furnace
Energy saving device
Extension apparatus for damper control shaft
Flue box assembly
Flue box assembly
Flue box with adjustable counterbalance cap
Flue control device
Flue control device
Flue damper and draft regulator
Flue restrictor