Aldes 4 backdraft damper bdd4Backdraft damper with galvanized steel collar and lightweight aluminum damper blades. Backdraft damper with galvanized steel collar and lightweight. Fits 4" Round Duct Aldes 4" Backdraft Damper - BDD4 MFG#: 99 023. American ALDES BDD - 4 inches to 16 inches Spring Loaded. features ? 20 gauge. American Aldes 99 023 Aldes 4" Backdraft Damper - BDD4. American Aldes 99 023 Aldes 4" Backdraft Damper - BDD4.
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Soffit vent for 4 ducting with backdraft damperYou will find backdraft dampers, wall caps, roof caps, soffit vents. So my second choice are spring loaded backdraft dampers from. White, Soffit Intake/Exhaust Vent/Hood backdraft damper and screen This review is from: Dundas Jafine SEVZW Soffit Exhaust Vents Fits 4-Inch, 5-Inch and 6-Inch Duct (Tools. Fantech RSK4 - RSK Series 4" Duct Backdraft Damper. White soffit vent for 4? ducting with backdraft damper White soffit vent for 4 ? 1 of 2 people found the following review helpful: Soffit hoods. Fantech UEV4 - Soffit Vent, 4" Duct - Plastic vent for use with 4 or 5-inch duct.