S14-390-WT: 900mm (36″) diameter composite cover and frame.
S14S-390-WT: 900mm (36″) diameter composite cover and frame. Chamber stackable for shipping.
S14S-390-CD-WT: 900mm (36″) diameter centre dip composite cover and frame. Chamber stackable for shipping.
S14-3100-WT: 1020mm (40″) diameter composite cover and frame.