Square Box Concentric Knockouts - Steel - 4'' x 2'' x 1/8''-Each

The Thomas & Betts® concentric knockout box is used for wire connections in junction box.

To extend an existing 4 in. square boxMount with screws directly on the original box-Weight(lbs.)
0.573
Weight(kg)
0.2599128
Assembled Depth(cm)
5.7658
Assembled Depth(in)
2.27
Assembled Depth(mm)
57.658
Assembled Height(cm)
10.2362
Assembled Height(in)
4.03
Assembled Height(mm)
102.362
Assembled Width(cm)
10.287
Assembled Width(in)
4.05
Assembled Width(mm)
102.87
Color/Finish Family
Silver
Construction Type
Drawn
Cover Included
No
File/Certification Number
5043
Fire Rating in Hours
N/A
GFCI Receptacle Included
No
Knockout Size
1/2-in
Low Voltage
No
Material
Steel
Maximum Weight Supported(kg)
0.0
Maximum Weight Supported(lbs.)
0
Mounting Type
In-wall
Number of Gangs
0
Number of Knockouts/Holes
10
Old or New Work
New work
Package Quantity
1
Safety Listing
CSA safety listing
Series Name
Extension rings
Sub Type
Standard
Sub-Brand
N/A
Type
Square
Use Location
Wall
Warranty
1-year limited
Weatherproof
No
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