Builder's Best 110696 Saf-T-Duct Dryer Outlet Box

Fits all 16" centers 2" x 4" and 2" x 6"

6 prescored true 4" dia knockouts in most common positions

6 starburst knockouts for gas connections and venting

Plastic meets UL standard 94HB tests for flammability

Self-trimming unit 18"W x 24"H

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