Steel 4x4 box for retrofit construction. Screw hole patterns for 4x4 and two gang devices. 27.5 cu. in. 2 Hour Fire Rating.6 lb rating for Walls, 10lb rating for ceilings.

Steel 4x4 Box for Retrofit Construction – Electrical Enclosure This Steel 4x4 box is designed for retrofit construction applications, providing secure mounting for 4x4 and two-gang electrical devices. It is suitable for use by electrical distributors and switchgear suppliers requiring durable, plated steel enclosures with fire resistance and reliable weight ratings for walls and ceilings. Specifications Material: Plated Steel Color: Silver Volume: 27.5 cubic inches Fire Rating: 2 Hour Weight Rating: 6 lbs for walls, 10 lbs for ceilings Dimensions: 4.250" (A) x 4.185" (B) x 2.815" (C) UPC: 018997005977 Manufacturer Part #: FSR404S Product Weight: 32.65 lbs Features Screw hole patterns accommodate both 4x4 and two-gang devices Spring clip holds box securely against wall when screws are tightened 1/2” and 3/4” knockouts for flexible wiring options cULus listed for safety and compliance Plated steel construction for durability and corrosion resistance Downloads & Links FSR404S Line Drawing Catalog Page