Product · United States

4" / 100mm Duct Return Air Blocker - Backflow Preventer - Dryer Vent Adapter With Valve, Without Valve

Product no longer available. The stores we track no longer sell it; last price seen $6.45.

Price history: 2 daily prices tracked since 2026-10-20; lowest $6.45, highest $6.45.

4" / 100mm Duct Return Air Blocker - Backflow Preventer - Dryer Vent Adapter With Valve, Without Valve

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