279 4 Concrete Ring 4 Deep 1 - 3/4 KOs Steel

4 Inch Concrete Ring, Depth: 4 Inch, Double Row Knockouts: 3/4 Inch and 1 Inch, Cubic Inches: 49.3 Inch, Steel

Raco's concrete rings are used with poured deck (floor) in high-rise construction. These boxes are installed on wooden or steel concrete forms. After the forms are removed, the box is flush with the concrete.

Product Specification :

• Flat sides provide excellent contact for locknuts
• External ears are used to nail the ring to the wood form
• Top cover is removable for before-pour work
• Ears on inside of box are for fixtures
• Waxed fixture ears prevent concrete from interfering with the threads
• A variety of covers are available
• Cover plate must be orered separately with all RACO® concrete rings
• Back plate with 3/8 in. threaded fixture stud included (Raco 891)
• Slots provided for Raco 918 bars (sold separately)