Flat one side increasers are manufactured using standard gauge galvanized steel.

– Reduces the possibility of the hoods from being damaged
– With the sleeve installed reduces the time required to make a hole in the brick or stone
– After the hood has been installed on the outside of the home the thimble can be filled with insulation to maintain the desired R value
– Thimble is required for Energy Star rated homes
Part Number | Description | UOM | Ctn.Qty |
VTTHIMBLE4 | 4″ VENT/INTAKE THIMBLE | EA | 36 |
VTTHIMBLE5 | 5″ VENT/INTAKE THIMBLE | EA | 42 |
VTTHIMBLE6 | 6″ VENT/INTAKE THIMBLE | EA | 36 |
Flat one side increasers are manufactured using standard gauge galvanized steel.
Filter Frames are manufactured using galvanized steel.
Angle Boots are manufactured with standard gauge galvanized steel.
Side take-off from duct. For connecting mixing boxes, diffusers, etc. to main duct trunk line.