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Aluminum Adapters

3-4 ALUM INCREASER
$8.99
3-4 ALUM INCREASER

Adapts any 4" dryer to existing 3" venting system.

3-4" INCREASER-DECREASER
$5.59
3-4" INCREASER-DECREASER

Connects 3" to 4" ducts and is ideal for bathroom fan exhaust applications.