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By Raco 

Catalog ID: 189H

By Raco
Catalog ID:  189H
4 in. Square Box, Welded, 1-1/2 in. Deep with Eight 1/2 in. KO's & Five TKO's, Raised Ground, 8 in. #12 Solid Copper Pigtail, UBS, HM Bracket

Designed to enclose electrical wiring, switches, receptacles or lighting fixtures. Constructed from 1/16 in. pre-galvanized steel. 8-32 cover mounting screws assembled. Suitable for use without a bonding jumper in circuits up to 600V.

  • TKO knockout design provides installation flexibilty
  • UBS integrated support provides the bracing on back of box for wall cavities between 2-1/2 in - 6 in. thickness, H/M
  • Welded construction
  • Eight 1/2 in. knockouts and five TKO knockouts
  • UL Listed
  • 21.0 cu. in. capacity
  • Raised ground, 8 in. #12 Solid Copper pigtail
  • Acceptable in 2-hour fire rated walls

Product Details


Bracket Setback 0.375
Bracket Type H, for Metal or Wood Studs
Color Gray
Drawn or Welded Welded
Fire Resistance Yes
Knockouts 1/2 in;1/2 - 3/4 in Combination (TKO)
Material Steel
Number of Gang(s) 2-Gang
Type Box
UPC 050169500002
Wiring System Conduit


Actual Depth 2.063 in
Cubic Capacity 21.0 cu.in
Depth 1.5 in
Height 4 in
Raised Ground Yes
Weight 0.84 lb
Width 4.913 in

Electrical Ratings

Power Distribution Features Fire Rated

Certifications and Compliance

Certified Listed UL Listed


Carton Quantity 20
Packaging Type No Packaging
Pallet Quantity 1600

Resources and Downloads


Sell Sheets


RACO: H&M Series Installation

Terms and Conditions