Executive Chairs B7501 Beautifully upholstered in black LeatherPlus. Passive ergonomic seating with built-in lumbar support. Padded armrests covered with Caressoft upholstery. Large 27" nylon base for greater stability. Hooded double wheel casters. Upright locking position. Pneumatic gas lift seat height adjustment. Adjustable tilt tension control. Optional knee-tilt mechanism upgrade available (B7502). Matching guest chair with black polished steel legs (B7509) or with cantilever sled base (B7519) Arm Height: 26.5--30"H . Seat Size: 21"W x 19"D. Seat Height: 20-23.5". Overall Size: 27"W x 28.5"D x 43.5-47"H. Weight Capacity: 250lbs. * Optional Chrome base upgrade available for all Boss Executive Chairs. Executive Chairs B580 The Boss Web Chair is upholstered with a unique "Web" mesh material which allows air to pass through, adding to long-term comfort by preventing body heat and moisture build up. The "Web" back distributes weight evenly, and provides the perfect level of back support by conforming to each individual's back shape. As with any fabric material, the "web" mesh will stretch and loosen the tension over extended periods of usage. That's why we've invented the patented "Web Tension Knob". This knob (located underneath the seat) allows the user to tighten or loosen the tension of the mesh material with a few simple twists. This is a unique feature you will find only on the Boss Web Chair. The seat surface and the outer back areas are upholstered with genuine LeatherPlus. Pneumatic gas lift seat height adjustment. Adjustable tilt tension control. Large 27" nylon base for greater stability. Hooded double wheel casters. Adjustable heights armrests. Arm Height: 24.5-31"H. Seat Size: 20"W x 20.5"D. Seat Height: 18-21.5"H. Overall: 27.5"W x 27"D x 41.5"-45"H. Weight Capacity: 250lbs. B580 B590 B601 B616 B646 B650 B651 B686 B700 B706 B750 B756 B800 B850 B905 B915 B980 B990 B983 B999 B7201 / B7202 B7306 / B7307 B7301/ B7302 B7401 B7406 B7411 B7501 / B7502 B7601 B7641 B7901 B7906 B8106 / B8306 B8201 B8306 B8316 B8376 B8386 B8401 / B8801 B8501 / B8502 B8506 / B8507 B8601 B8701 B8901 / B8902 B8906 / B8907 B8911 / B8912 B9001 / B9002 B9006 / B9007 B9101 B9151-C B9221 B9226 B9301 B9302 B9306 / B9307 B9351 B9701 B9706 ©1999-2008 Boss Chair, Inc. All rights reserved worldwide. 5353 Jillson Street, Commerce, CA 90040, Tel:(323) 262-1919 Fax:(323) 262-2300