PVC Bulkhead Fittings, Sizing Chart
| Fitting Size | Hole Size |
| 1/4" | 7/8" |
| 3/8" | 1" |
|
1/2" |
1 1/4" |
| 3/4" | 1 5/8" |
| 1" | 1 7/8" |
| 1 1/4" | 2 5/16" |
| 1 1/2" | 2 9/16" |
| 2" | 3" |
| 3" | 4 1/2" |
| 4" | 5 1/2" |
| 6" | 7 7/8" |
| Fitting Size | Hole Size |
| 1/4" | 7/8" |
| 3/8" | 1" |
|
1/2" |
1 1/4" |
| 3/4" | 1 5/8" |
| 1" | 1 7/8" |
| 1 1/4" | 2 5/16" |
| 1 1/2" | 2 9/16" |
| 2" | 3" |
| 3" | 4 1/2" |
| 4" | 5 1/2" |
| 6" | 7 7/8" |