4" Square Boxes and Extensions

4" Square Extension Ring, 2-1/8" Deep - Drawn, No Knockouts

SKU: 53171-BLNK Model: 53171-BLNK
4" square 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.
$27.95 /EA
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Features & Benefits

  • Blanks sides can be field punched or modified
  • Drawn design
  • Combination Phillips/Slotted screw heads.
  • Angle Pitch: 45 Degrees
  • Slope: .875" rise to 2.85" rise


Stock # 53171-BLNK 53171-BLNK
Model # 53171-BLNK 53171-BLNK
UPC # 785592115089 785592115089
Product Height 2.13 5.41 inch cm
Product Width 4.0 10.16 inch cm
Product Length/Depth 4.0 10.16 inch cm
Product Weight 0.38 0.17 lbs kg
Weight UOM LB LB
Box Depth 2-1/8" 2-1/8"
Color Silver Silver
Cubic Capacity 30.3 (496.5) 30.3 (496.5)
Knockouts Blank; No Knockouts Blank; No Knockouts
Special Features Call for Custom Hole Placement Call for Custom Hole Placement