SuperBlue hard body electrical box. Direct substitute for fiberglass boxes. SuperBlue box will not break when hit with a hammer. Resists flexing and holds shape in extreme conditions. UL (Underwriter's Laboratories) listed. No. BH525A-UPC: Mount Type: Nail On, Width: 4", Height: 4", Depth: 3", Volume: 25 cu in, Support Rating: 50 lb, Material: Thermoplastic, Metallic/Non-Metallic: Non-Metallic, Construction: Molded, Shape: Round, Color: Blue, UL Listed: Yes, Pkg Qty: 1 No. BH525H: Mount Type: Bracket, Width: 4", Height: 4", Depth: 3", Volume: 25 cu in, Support Rating: 50 lb, Material: Thermoplastic, Metallic/Non-Metallic: Non-Metallic, Construction: Molded, Shape: Round, Color: Blue, UL Listed: Yes, Pkg Qty: 1 No. BH525P: Mount Type: Nail On, Width: 4", Height: 4", Depth: 3", Volume: 25 cu in, Support Rating: 50 lb, Material: Thermoplastic, Metallic/Non-Metallic: Non-Metallic, Construction: Molded, Shape: Round, Color: Blue, UL Listed: Yes, Pkg Qty: 1 No. BH614R: Mount Type: Old Work, Width: 3-1/2", Height: 3-1/2", Depth: 2-3/8", Volume: 14.5 cu in, Support Rating: 10 lb, Material: Thermoplastic, Metallic/Non-Metallic: Non-Metallic, Construction: Molded, Shape: Round, Color: Blue, UL Listed: Yes, Pkg Qty: 1