Safco Products Uber Big and Tall High Back Chair 3490BV, Black Vinyl, Rated for 24/7 Use, Holds up to 500 lbs. (Optional arms sold separately) BIGGER, BETTER. Safco Uber Big and Tall High Back Chair provides comfortable seating for workers of all shapes and sizes. The cushioned-back support and 360 degree swivel seat offer an ergonomic, comfortable option for weights up to 500 lbs. RATED FOR 24/7 USE. This heavy-duty desk chair works around the clock in call centers, dispatch operator facilities and other multi-shift environments. Rated for 24/7 use (more than a 40-hour work week). ENHANCED COMFORT. Waterfall seat edge may help improve circulation by reducing pressure points while seated. HEIGHT-ADJUSTABLE. Pneumatic lever provides easy height adjustment from 19 1/2" to 23 1/2" for a comfortable, personalized fit. Back tilt adjusts for tension and locks. PRODUCT DIMENSIONS. Finished product dimensions: 27"W x 30 1/4"D x 40 3/4 - 44 3/4"H. OPTIONAL ACCESSORIES. Accessories available (but not included): Shorter 4" Pneumatic Cylinder (3489), and T-Pad Arms Set (3496).