The Carlton Electrical boxes have always been the best. This electrical ceiling box is made of PVC material with a 3.5-inch diameter and a 14.5 cubic inch volume. This 1 gang box is available in blue color. This round ceiling box has a mounting means base with ears and a snap-in bracket. Also used as an outdoor electrical box, it is made from thermoplastic material. This Electrical Box from Carlton is used in the old/new work ceiling.