Builders Best 110696 Saf-T-Duct(R) Dryer Outlet Box

Fits all 16" centers 2" x 4" & 2" x 6" ;

6 prescored true 4" dia knockouts in most common positions ;

6 starburst knockouts for gas connections & venting ;

Plastic meets UL standard 94HB tests for flammability ;

Self-trimming unit 18"W x 24"H ;

White;