AR278 - 4" OCTAGONAL CONCRETE RING, 3-1/2 DEEP..

AR278 - 4" Octagonal Concrete Ring Electrical Box The AR278 4" Octagonal Concrete Ring is designed for use in high-rise construction with poured deck (floor) applications. This welded steel electrical box is intended for installation on wooden or steel concrete forms, providing a flush finish with the concrete once the forms are removed. Suitable for electrical distributors and lighting solutions requiring durable and reliable wire and cable management within concrete structures. Specifications Manufacturer Part #: AR278 Material: Steel Depth: 3-1/2 in Length: 3.50 in Width: 4.00 in Height: 4.00 in Cubic Inches: 43.0 (704.6 cm³) Weight Each: 410.9 g (0.3000 lb) Side Knockouts: Single row of 3/4 in & 1 in Welded Construction Recommended Max Load for Fixture (Static): 50 lbs UPC: 837654064108 Packaging Quantity: 20 per carton Features Flat sides provide excellent contact for locknuts External ears allow nailing to wood forms for secure installation Removable top cover facilitates before-pour work Internal ears designed for fixture mounting Waxed fixture ears prevent concrete interference with threads Variety of covers available for different applications Downloads & Links Spec Sheet Specification Sheet