Carlon Pvc " Super Blue 24.5 Cu In Fiberglass Blue Bulk Rigid polycarbonate box used for decorative light fixtures or low voltage devices Made of a heat resistant thermoplastic material that is lightweight, noncorrosive and nonconductive Captive nails, 25 cubic inch, 3" deep, large capacity boxes are perfect for specialty lighting, track lighting, or smoke/security devices Listed for fixture support up to 50 lb