Class 100 Cleanroom Chair, adjustable From 17" to 21 1/4", standard grade I vinyl, ergo tilt control, 19" wide x 18" deep contour seat pan, 17-1/2" wide x 12-1/2" high back, # 01 chrome hooded dual wheel casters, 25" diameter 5 legged polished aluminum base, class 100 cleanroom package. Colors choice includes Deep Burgundy, Marina Blue, Royal Blue, White, Red, Black, and Grey. - The Stamina 3000 Series is very well known and is highly regarded as one of the best chairs on the market for Cleanroom, ESD and general production facilities. The Series continues to be specified as the standard chair for many of the Fortune 1000 companies. Multiple heights are available to cover everything from desk to high bench. Numerous options make it easy to fit most end users and their applications.