Back Sizes for the Ultima Series

Backrest needs to support lumbar curve

Adjust height of backrest to accomodate curve of back. This can be done in a seated position with a ratchet back. While using your computer the backrest needs to come forward to support the small of the back. There should be no need for an additional lumber cushion if the backrest fits properly. Sometimes adding these cushions cause the individual to sit further away from the back support and force unsupported posture.

We offer 3 back sizes for the Ultima Series: 1 size (Mid-back) for Petite/Small Frames, 2 sizes (Mid-back & High-back) for Average Frames and 1 size (High-back) for Large Frames:

Petite/Small
(CK8100) Back Height 22" Back Width 20"

Average Frame
(CK8200) Back Height 22" Back Width 20"

Average Frame
(CK8300) Back Height 24" Back Width 20"

Large Frame
(CK8400CL) Back Height 24" Back Width 22"