Increasers / Reducers

DuraVent

Increaser Tee

MODEL #: 4PVL-T3 $ 120.88

DuraVent

Increaser ~ 3"to 6"

MODEL #: 3PVL-X6 $ 88.51

DuraVent

DuraBlack Double Skirted Adapter ~ 6"

MODEL #: 6DBK-ADDB $ 44.22

DuraVent

Oval-To-Round Adapter

MODEL #: 6DBK-ADOR $ 43.43

DuraVent

Pellet Vent Increaser 3" to 4"

MODEL #: 3PVL-X4R $ 41.64

DuraVent

Stovepipe Adapter

MODEL #: 6DBK-AD $ 22.39

Gray Metal Products

Stove Pipe Increaser

MODEL #: 6X8-612 $ 20.60

Gray Metal Products

Stove Pipe Reducer ~ 8" x 6"

MODEL #: 8X6-611 $ 18.42

Gray Metal Products

Gray Metal - 6" to 4" Galvanized Duct Reducer

MODEL #: 6X4-311-24 $ 13.25

Increasers and reducers transition between different duct diameters so you can connect trunk lines to smaller branch runs. A proper fit minimizes turbulence and maintains efficient airflow.