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| Lower Mount Connection Dimension (DRY) | |
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| DIAL SIZE | A | B | D(1/8") | D(1/4") | D(1/2") | E | F |
| 1.5" | Ø42 | 25 | 27.5 | 29.5 | ----- | 8.5 | 11x11SQ |
| 2" | Ø52.8 | 28 | 45 | 45.7 | ----- | 10.5 | 14x14SQ |
| 2.5" | Ø63.5 | 28 | 50 | 50.7 | ----- | 10.5 | 14x14SQ |
| 3" | Ø75 | 29 | 55.5 | 57.5 | 61.5 | 10.5 | 14x14SQ |
| 3.5" | Ø88 | 29 | ----- | 65.7 | 68 | 10.5 | 14x14SQ |
| 4" | Ø100 | 36.5 | ----- | 74.7 | 75 | 12.5 | 17x17SQ |