IMPORTANT NOTES:
Available Haunch Sizes are: 6 inch (152mm), 8 inch (203mm) and 12 inch (305mm)
Span and Rise are available in increments of 4 inches (102mm)
For example, 6 ft 8 inch x 8 ft 4 inch (2032mm x 2540mm)
Wall thicknesses are available in 2 inch (51mm) increments
For example, 2 inch, 4 inch, 6 inch, etc…
| Haunch Size | Min. Rise | Min. Span |
| 6 inch | 2 ft | 3 ft |
| 8 inch | 3 ft | 3 ft |
| 12 inch | 4 ft | 4 ft |