Progress Lighting's P85-AT is a 5" incandescent air-tight recessed housing that fits into a 2 x 8 construction. It features a universal junction box with snap-out sides, a removable housing for field inspection of wiring, and a grounding pigtail ideal for device grounding applications. This P85-AT Lighting Fixture includes integral nail bar hangers with integral T-bar mounting clamps for wood joist construction. It has overall dimensions of 8 3/8" x 13" x 7 5/8" with a 5 1/4" ceiling opening. Progress Lighting has been known for making first-rate lighting fixtures. This IC-rated Recessed Housing is of galvanized steel construction. It has a porcelain socket with a nickel-plated brass screw shell. It complies with the Washington State Energy Code (WSEC) requirements and is UL-CUL-listed for damp locations. This product is manufactured by Progress Lighting, a credible name in the lighting industry.