RAS ATCM: Sizes
| Model | CURB ROUGH OPENING | |||
| INCHES | MM | ACRYLIC | GLASS | |
| 2052 | 14.5 x 46.5 | 368 x 1181 | ✓ | ✓ |
| 2076 | 14.5 x 70.5 | 368 x 1791 | ✓ | ✓ |
| 2828 | 22.5 x 22.5 | 572 x 572 | ✓ | ✓ |
| 2836 | 22.5 x 30.5 | 572 x 775 | ✓ | ✓ |
| 2840 | 22.5 x 34.5 | 572 x 876 | ✓ | ✓ |
| 2852 | 22.5 x 46.5 | 572 x 1181 | ✓ | ✓ |
| 2868 | 22.5 x 62.5 | 572 x 1588 | ✓ | |
| 2876 | 22.5 x 70.5 | 572 x 1791 | ✓ | |
| 3636 | 30.5 x 30.5 | 775 x 775 | ✓ | |
| 3652 | 30.5 x 46.5 | 775 x 1181 | ✓ | |
| 3668 | 30.5 x 62.5 | 775 x 1588 | ✓ | |
| 3676 | 30.5 x 70.5 | 775 x 1791 | ✓ | |
| 4040 | 34.5 x 34.5 | 876 x 876 | ✓ | |
| 4052 | 34.5 x 46.5 | 876 x 1181 | ✓ | |
| 4242 | 36.5 x 36.5 | 927 x 927 | ✓ | |
| 5252 | 46.5 x 46.5 | 1181 x 1181 | ✓ | |
Columbia will manufacture any size skylight in acrylic or glass, in addition to those listed above, as a custom order. Custom size skylights are available in all acrylic and glass glazing options at a premium price compared to standard sizes.