4" Octagon Extension Ring, 3-1/2" Deep - Drawn W/Conduit KO's And Fixture Ears 3-1/2" O.C.

SKU: 55181-S Model: 55181-S

Octagon extension rings are added to junction boxes to increase wiring capacity and provide access for additional conduit runs and electrical wire. Extension rings prevent the need to remove old conduit boxes and wiring from circuits when additional capacity is needed.

$26.42 /EA
Limited Availability
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Features & Benefits

  • Combo-head fixture/cover mounting screws
  • Combination knockouts allow for greater wiring flexibility


Stock # 55181-S 55181-S
Model # 55181-S 55181-S
UPC # 785592124784 785592124784
Product Height 3.5 8.89 inch cm
Product Width 4.0 10.16 inch cm
Product Length/Depth 4.0 10.16 inch cm
Product Weight 0.22 0.10 lbs kg
Weight UOM LB LB
Box Depth 3-1/2" 3-1/2"
Color Silver Silver
Cubic Capacity 37.0 (606.4) 37.0 (606.4)
Knockouts (4) 1/2-3/4 in. Side Knockouts (4) 1/2-3/4 in. Side Knockouts
Size 4 in. 4 in.


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