Description
4" Square extension box with concentric knockout. Extension ring
| Product Name: | SMB20245 | 
| Dimensions: | 4" X 4" X 1 1/2" (Length X Width X Depth) | 
| Capacity: | 21 in3 (cubic inch) | 
| Number of Gangs: | |
| Number of Knockouts: | 10 | 
| Knockouts Size: | 1/2" & 3/4" | 
| Knockouts Location: | 4 X 1/2" on the Sides 6 X 1/2" & 3/4" on the Sides  | 
| Material: | Galvanized Steel | 
| Mounting: | |
| Box Quantity: | 50pcs | 
 


