Premo Office Chair Model CH444 - Incorporating quality ergonomic features in a rugged contemporary design, the “PREMO” is truly the ultimate in office seating comfort. The chair seat & back cushions constructed with molded foam, providing more comfort & durability. The smooth-action gas cylinder mechanism adjusts seat height from 16 1/2" to 21 1/2". Backrest provides solid orthopedic spine support and full-size upholstered seat is contoured for added comfort. Construction features include sturdy black metal frame, reinforced 5-star non-tip fiberglass base and double wheel “hood” design casters. Optional Armrests available on page 15. Shipping weight: 31 lbs. Draftsman’s Chair is created by adding the CK49 Conversion Kit which adds 7 1/2" to the height of the chair.