Built for poured-deck electrical installations in high-rise construction, this steel concrete ring sits flush with the concrete once wooden or steel forms are removed. Flat sides provide excellent locknut contact, while external nailing ears and a removable top cover support installation and before-pour work. Waxed internal fixture ears help keep concrete out of the threads for fixture mounting.

Specifications

Product Type Concrete extension ring / box
Nominal Size 4 in.
Depth 3-1/2 in.
Capacity 42 cu. in.
Material Steel
Construction Welded
Colour Silver
Side Knockouts 4 × 1/2 in. and 4 × 3/4 in.
Raised Ground Screw Yes
Wiring System Conduit
Application Poured concrete decks (floors) in high-rise construction; installation on wooden or steel concrete forms
Mounting Features External nailing ears and waxed internal fixture ears
Top Cover Removable for before-pour work
Bracket Type No bracket
Gangable No
Plaster Ears No
Location Rating Dry location
Certification CSA certified
Listed Weight 0.95 lb
Pack Quantity 20
UPC 626463002162