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4x1-1/2 Octagonal Extension Ring 1/2 K.O.
Material
Steel Pre-galvanized
Size
1/2" K.O.
Type
Drawn
Standard
UL 514A
Depth
1-7/8"
Thick
0.7mm - 1.6mm
Usage
4" Octagon Boxes and Extension Rings are used in the installation of light fixtures and other electrical devices in walls and ceilings. The multiple knockouts (in sizes 1/2" and 3/4", MKO), non-metallic and metal sheathed cable clamps allow for easy installation.


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