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By Raco 

Catalog ID: 187

By Raco
Catalog ID:  187
4 in. Square Extension Ring, Drawn, 1-1/2 in. Deep, Eight 1/2 in. and Four, 3/4 in. KO's for Switch Boxes

Extension rings provide additional cubic capicity. May be used an an outlet box fro surface conduit. Constructed from 1/16 in. pre-galvanized steel.

  • Positioned to accommodate 1-2 switch boxes
  • Combination screw heads allow quick installation
  • Drawn construction
  • Eight 1/2 in. knockouts and four 3/4 in. knockouts
  • UL Listed
  • 22.5 cu. in. capacity
  • UPC barcoded

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Product Details


Bracket Type No Bracket
Color Gray
Drawn or Welded Drawn
Fire Resistance Yes
Knockouts 1/2 in;3/4 in
Material Steel
Number of Gang(s) 2-Gang
Type Extension Ring
UPC 050169001875
Wiring System Conduit


Actual Depth 1.563 in
Cubic Capacity 22.5 cu.in
Depth 1.5 in
Height 4 in
Weight 0.582 lb
Width 4 in

Electrical Ratings

Power Distribution Features Fire Rated

Certifications and Compliance

Certified Listed UL Listed


Carton Quantity 25
Packaging Type No Packaging
Pallet Quantity 2400

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