1. 4P products and some boxes have knock-outs of 21mm on both surfaces and others have holes. The latter type is ready to use without additional processing.
| BOXCO Inc. | |
|---|---|
| Product Category | Industrial Enclosures |
| Product Number | BC-AB-4P21H |
| Product Name | Terminal Block Box (4P Knock-Out) |
| Type | Junction Box |
| Shape | Rectangular |
| Length | 3.23 inch (82 mm) |
| Width | 1.97 inch (50 mm) |
| Depth | 1.69 inch (43 mm) |
