HVAC Plenum Ceiling Box 12X12X10 (12"X12" Square to 10" Round) with Drywall Flange - Connects to Vent Register Diffuser, Galvanized Steel Metal C-Box Duct, Airflow Conditioning Ceiling Registers - Amazon.com
PATIKIL 8 Inch Duct Connector Flange, Metal Straight Pipe Flange Square to Round Interface Air Duct for Heating Cooling Ventilation HVAC System - Amazon.com
6" Inch Air Duct Connector Flange - Straight Collar Plate with Air Tight Seal for Connecting Metal and Flex Ducting to HVAC System Vents and Walls/Ceilings - Amazon.com
PATIKIL 3 Inch Duct Connector Flange, Metal Straight Pipe Exhaust Hose Flange for Heating Cooling Ventilation HVAC System - Amazon.com
4 PCS 8 Inch (7.5 inch) Duct Connector Flange, Plastic Straight Pipe Flange, Ventilation Pipe Connector for Heating Cooling Ventilation HVAC System, Black, ABS Air Vent Duct Connector - Amazon.com
HVAC OV Metal Duct Connector Flange - 6 Inch Fit Collar Built to Connect Vent Ducts Walls and Ceilings, Gray - Amazon.com
3" Duct Connector Flange Inlet Fitting,Plastic Straight Pipe Flange for Heating Cooling Ventilation System ABS Duct Connector (3 inch/75 mm) - Amazon.com
Abuff 4-inch Duct Connector, 2 Pack Plastic Straight Pipe Flanges, Ventilation Ducting Connector for Heating Cooling Ventilation System: Amazon.com: Tools & Home Improvement
6" Duct Connector Pipe Flange Inlet Fitting for Heating Cooling Ventilation System ABS Duct Connector (6 inch/150 mm) - Amazon.com
12" Inch Air Duct Connector Flange - Straight Collar Plate with Air Tight Seal for Connecting Metal and Flex Ducting to HVAC System Vents and Walls/Ceilings - Amazon.com
Duct Connector Flange 5 inch, Plastic Straight Pipe Flange for Heating Cooling Ventilation System (5") - Amazon.com
PATIKIL 10 Inch Duct Connector Flange, Metal Straight Pipe Flange Square to Round Interface Air Duct for Heating Cooling Ventilation HVAC System - Amazon.com
PATIKIL 10 Inch Duct Connector Flange, Metal Fitting Straight Pipe Flange Round Ventilation Air Duct for Heating Cooling Ventilation HVAC System - Amazon.com
PATIKIL 3" Duct Connector Flange, 3 Pack Metal Straight Pipe Exhaust Flange Duct Mounting Plate with Screws for Air Heating Cooling Ventilation HVAC System - Amazon.com
PATIKIL 7" Duct Connector Flange, 3 Pack Metal Straight Pipe Exhaust Flange Duct Mounting Plate for Heating Cooling Ventilation HVAC System - Amazon.com
6 Inch Duct Connector, HG Power 150mm Plastic Straight Pipe Flange for 6" Ducting Pipes Hoses Heating Cooling HVAC Ventilation Use, Black - Amazon.com
Amazon.com: 4 Inch Duct Flange by Vent Works - Metal Wall Plate Kit Connector Easily Accepts Dryer Vent Hose - Galvanized HVAC Fitting Fits Any 4in Round Ducting Including Flexible, Semi Rigid
4 PCS 4 Inch Duct Connector Flange Inlet Fitting Metal Straight Pipe Flange Ventilation Pipe Connector for Heating Cooling Ventilation HVAC System（Silvery Gray） - Amazon.com
PATIKIL 3 Inch Duct Connector Flange, 2 Pack Metal Straight Pipe Exhaust Hose Flange for Heating Cooling Ventilation HVAC System - Amazon.com
HVAC OV 2pack 5" Inch Duct Flange for 5" Inch Pipe with Wall Mount Connection. Plastic connector for heating and cooling systems, ventilation, exhaust/dryer vent connector. - Amazon.com
PATIKIL 6 Inch Duct Connector Flange, 2 Pack Metal Straight Pipe Flange Square to Round Interface Air Duct for Heating Cooling Ventilation HVAC System - Amazon.com
Duct Connector Flange 6 Inch, Plastic Straight Pipe Flange for Heating Cooling Ventilation System (6'' Inch) - Amazon.com
HVAC OV 6" Inch Duct Flange for 6" Inch Pipe with Wall Mount Connection. Plastic connector for heating and cooling systems, ventilation, exhaust/dryer vent connector. Straight or Flexible Round Pipes - Amazon.com
Vent Systems 4" inch Air Vent Duct Connector Flange Straight Ventilation Pipe Metal Ducting Connector Plate For Cooling Heating Ventilation System HVAC - Amazon.com
Amazon.com: Duct Connector Flange 6 Inch 2 Pack by Wadoy ABS Quality Heating Cooling Ventilation System 𝟔 𝐈𝐧𝐜𝐡 𝐃𝐮𝐜𝐭 Air Conditioner Exhaust Hose Flange Wall Mount : Industrial & Scientific
Delisheng Duct Connector Flange Metal Straight Pipe Flange for Heating Cooling Ventilation System 10 Inch (9.65inch) - Amazon.com
