AB OPEN RIBS
| 8AL | 9AL | 9.5AL | 10AL | 11AL | 13AL | 14AL | 15AL | |
| Length | 8’ 4” (2.55m) | 9’ 1” (2.75m) | 9’ 6” (2.90m) | 10’ 6” (3.19m) | 11’ 6” (3.50m) | 13’ 0” (3.90m) | 14’ 0” (4.30m) | 15’ 0” (4.58m) |
| Beam | 4’ 9” (1.45m) | 4’ 9” (1.45m) | 5’ 6” (1.68m) | 5’ 6” (1.68m) | 5’ 7” (1.70m) | 6’ 7” (2.00m) | 6’ 7” (2.00m) | 6’ 9” (2.06m) |
| Ins. Length | 6’ 4” (1.92m) | 6’ 11” (2.12m) | 6’ 11” (2.12m) | 7’ 11” (2.42m) | 8’ 11” (2.72m) | 10’ 6” (3.18m) | 11’ 9” (3.58m) | 12’ 10” (3.78m) |
| Ins. Beam | 2’ 1” (0.62m) | 2’ 2” (0.66m) | 2’ 8” (0.82m) | 2’ 8” (0.82m) | 2’ 8” (0.82m) | 3’ 0” (.91m) | 3’ 0” (.91m) | 3’ 0” (.91m) |
| Internal Area | 12.8 ft² (1.2 m²) | 15.0 ft² (1.4 m²) | 18.7 ft² (1.7 m²) | 21.3 ft² (2.0 m²) | 24.0 ft² (2.2 m²) | 31.1 ft² (2.9 m²) | 35.0 ft² (3.3 m²) | 37.0 ft² (3.4 m²) |
| Weight | 73 lb (33kg) | 79 lb (36kg) | 95 lb (43kg) | 117 lb (53kg) | 130 lb (59kg) | 232 lb (105kg) | 254 lb (1152kg) | 265 lb (120kg) |
| Max Person Cap. | 4 | 4 | 5 | 5 | 6 | 7 | 8 | 9 |
| Tube Diameter | 16” (0.40m) | 16” (0.40m) | 17” (0.43m) | 17” (0.43m) | 17” (0.43m) | 18” (0.46m) | 19” (0.48m) | 19” (0.48m) |
| Shaft Length | 15” | 15” | 15” | 15” | 15” | 20” | 20” | 20” |
| Shaft Twin Engines | n/a | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
| Max Weight Cap. | 854 lb (388kg) | 889 lb (404kg) | 1186 lb (539kg) | 1300 lb (591kg) | 1415 lb (643kg) | 2123 lb (965kg) | 2209 lb (1004kg) | 2409 lb (1095kg) |
| Rec. HP | 4hp (3.0kw) | 8hp (6.0kw) | 8hp (6.0kw) | 10hp (7.5kw) | 15hp (11.2kw) | 25hp (18.8kw) | 30hp (22.4kw) | 30hp (22.4kw) |
| Max HP | 6hp (4.5kw) | 10hp (7.52kw) | 15hp (11.2kw) | 20hp (14.9kw) | 20hp (14.9kw) | 30hp (22.4kw) | 40hp (29.8kw) | 40hp (29.8kw) |
| No. Air Cha. | 3 + 1 | 3 + 1 | 3 + 1 | 3 + 1 | 3 + 1 | 3 + 1 | 4 + 1 | 5 + 1 |