• Meets particulate goals of Federal Standard 209 for Class 100 cleanrooms
• Controls include pneumatic height adjustment, fully adjustable back, and 360° swivel
• 12-year factory warranty on all components. Lifetime factory guarantee on the pneumatic cylinder.

This seating effectively controls contamination for cleanroom applications within the semiconductor, bioscience, medical device, and computer industries. Large, contoured seat measures 20"W x 17"D x 2.5" thick and comes standard with resilient highdensity foam, durable seamless vinyl upholstery, stainless steel staples, and an effective filtration system. Contoured backrest measures 16"W x 10"H x 2" thick, is fully adjustable (3-3/8" vertically and 2-3/4" horizontally), and has lumbar curve for effective back support. Other features include easy-to-use pneumatic seat height adjustment, 360° swivel, five star brushed aluminum base, 18” adjustable chrome footring (Models 4300CR and 4500CR, only), and heavy duty mushroom glides. Hard floor casters are optional and add 1" to height of chair. Vinyl upholstery exceeds anti-flammability requirements of California Technical Bulletin 117. Standard Colors: Black and Royal Blue.