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Product Description
Galvanized steel 4” Square Extensions are 1-1/2” deep and 21 cubic inches; perfect to add to junction boxes for additional wiring capacity and provide access for additional conduit runs and electrical wire. UL listed .
| Cat# | Size | Depth | Hole Size | Knockouts | Thickness mm | |
| Sides | Bottom | |||||
| SBE50112 | 4"x4" | 1-1/2" | 1/2" | 12x1/2" | / | 1.0-1.6 |
SBE75112 | 4"x4" | 1-1/2" | 3/4" | 8x3/4" | / | 1.0-1.6 |
| SBEM112 | 4"x4" | 1-1/2" | 1/2" & 3/4" | 8x1/2" & 4x3/4" | / | 1.0-1.6 |
| SBE75218 | 4"x4" | 2-1/8" | 3/4" | 8x3/4" | / | 1.0-1.6 |
| SBEM218 | 4"x4" | 2-1/8" | 1/2" & 3/4" | 8x1/2" & 4x3/4" | / | 1.0-1.6 |
| SBEC218 | 4"x4" | 2-1/8" | 1/2" & 3/4" | 8xCOM | / | 1.0-1.6 |
