note: all opera grilles have a ridge on the back unless they are for 2.25 inch width duct openings in which case they are flat.
duct size | overall dims |
---|---|
2.25 by 10 inches | 2.875 by 11.375 |
2.25 by 14 inches | 2.875 by 15.375 |
4 by 10 inches | 5.75 by 11.75 |
4 by 12 inches | 5.875 by 13.875 |
4 by 14 inches | 6 by 16 |
4 by 8 inches | 5.875 by 9.75 |
6 by 10 inches | 7.875 by 11.875 |
6 by 12 inches | 7.875 by 13.875 |
6 by 14 inches | 8 by 15.875 |
6 by 6 inches | 7.25 by 7.25 |
8 by 12 inches | 10 by 13.875 |
8 by 14 inches | 10 by 16.125 |
8 by 8 inches | 9 by 9 |
10 by 10 inches | 11.25 by 11.25 |
10 by 14 inches | 11.875 by 16 |
12 by 12 inches | 13.75 by 13.75 |
14 by 14 inches | 15.875 by 15.875 |
14 by 24 inches | 15.75 by 25.875 |
14 by 30 inches | 16.25 by 31.875 |
20 by 30 inches | 22 by 31.75 |