ATCM-OF Pyramid Fixed
| Model | OUTSIDE CURB | ACRYLIC | |
| INCHES | MM | ||
| 2020 | 18.25 x 18.25 | 464 x 464 | ✓ |
| 2828 | 26.25 x 26.25 | 667 x 667 | ✓ |
| 3636 | 34.25 x 34.25 | 870 x 870 | ✓ |
| 4040 | 38.25 x 38.25 | 972 x 972 | ✓ |
| 4242 | 40.25 x 40.25 | 1022 x 1022 | ✓ |
| 5252 | 50.25 x 50.25 | 1276 x 1276 | ✓ |
| 6060 | 58.25 x 58.25 | 1480 x 1480 | ✓ |
| 6464 | 62.25 x 62.25 | 1581 x 1581 | ✓ |
| 7676 | 74.25 x 74.25 | 1886 x 1886 | ✓ |
| 8484 | 82.25 x 82.25 | 2089 x 2089 | ✓ |
| 100100 | 98.25 x 98.25 | 2496 x 2496 | ✓ |
Columbia will manufacture any size skylight in acrylic, in addition to those listed above, as a custom order. Custom size skylights are available in all acrylic glazing options at a premium price compared to standard sizes.