Goodman 667PCH2 Duct Adapter, Square to Round, 14.125 in HT, Galv Steel
Square to Round Fan Blower Outlet Adapter Fittings | Oneida Air Systems
Wall Range Hood Vent Kit | Kitchen Exhaust Hood Fan | Range Hood Duct Adapter - Pipe Fittings - Aliexpress
Trunk Duct Adapter Duct Fitting at Menards®
6 Inch to 4 Inch HVAC Duct Reducer & Increaser - Galvanized Sheet Metal Ducting Connector for Airflow, Heating, Cooling, & Air Ventilation System Extra Strength and Fittings
Made in USA - 4" ID, Galvanized Duct Flange Adapter - 03233640 - MSC Industrial Supply
AC Infinity Duct Adapter, 6” to 4” Ducting Reducer Increaser Cone for Grow Tent Bathroom Kitchen Ventilation Systems
B3620 Duct Adapter
Lambro 4-in x Dia 3-in Dia Duct Reducer in the Duct Reducers department at Lowes.com
12 Inch to 8 Inch HVAC Duct Reducer & Increaser - Galvanized Sheet Metal Ducting Connector for Airflow, Heating, Cooling, & Air Ventilation System Extra Strength and Fittings
Snap-in duct adapter for 4" ducting
Square to Round Fan Adapter | DIY Hobby Spray Booth - Vent Works
NORDFAB, 4 in Duct Fitting Dia, 4 in Duct Fitting Lg, Hose Adapter - 45ZD92|8040401986 - Grainger
HeatStar® Nomad 12 in. Dia. Duct Adapter Ring for HS115TC & HS115SF - John M. Ellsworth Co. Inc.
8 X 7 Vent Pipe Reducer - HVAC Ductwork Sheet Metal - Indoor Comfort Supply
Rheem Outlet Duct Adapter - GP Conservation
Snap-in duct adapter for 6" ducting
FV-VS43R - Panasonic FV-VS43R - WhisperValue 4" Oval to 3" Round Duct Adapter
PANASONIC, 3 Duct Size (In.), Metal, Duct Adaptor - 32NA44|FV-VS43R - Grainger
Futuro Futuro Duct Adapter for Recessed Ceiling Recirculation System
Round Duct Connector, Model RDC-8, 8 In Dia, For Models SP/CSP, Product # RDC-8 | Greenheck
Air Duct Adapter For 120mm Case Fan 4" and 5" Output – The House of Hydro
Two Way Duct Adapter
Everbilt 4 in. Round to Oval Dryer Duct Adapter R2OHD - The Home Depot
