Drywall Ceiling Mount Box Extender, 25 packSome items may require minimum order quantities which can be changed in your shopping cart. Description Drywall Ceiling Mount Box Extender Our Drywall Ceiling Mount Bracket box Extender levels and supports the wiring of devices where the box is set back from the wall surface. This Ceiling Box Extender fits 3 1 2" and 4" round or octagonal boxes and extends boxes up to 1 1 2" to bring them level with a ceiling surface. Features Features Complies with