HEAVY DUTY TORSION Provides style & ergonomic support for the big & tall person. Built for heavy duty 24/7 applications. Oversized, heavy duty executive chair with knee tilt control, enhanced with extra thick controured foam & waterfall seat. Shown with optional arms HERCULES. As strong as its surname, it is designed for the extra large, tall user. Exceeding the federal FNEW 83-269E Intensive Use guidelines(which surpass the ANSI-BIFMA test guidelines) it accommodates up to 500 pounds under normal use. Solid 3/8" heat treated back bar for extra strength and durability High intensity Class 4 cylinder 500 Newton - 2.0mm wall thickness - 100mm guide bushing Heavy duty, torsion bar knee tilt mechanism maintians ergonomic foot-to-floor contact through entire tilt range. Can be positioned in "free float" or "at rest" task modes. Adjustable spring tension. Weight: 74lbs Number of Cartons: 1 Approximate Assembly Time: No assembly required Tools Required: No tools required Hercules Warranty: 12 year warramty on everything, except upholstery 5 year warranty on upholstery This warranty is for 7 day, 24 hour multi-shift commercial use, when the product is used by a person weighing 500 lbs. or less. Warranty: Should any product fail, the defective product must be returned to HIGHMARK or one of its authorized dealers, freight prepaid, with proof of original purchase. Written authorization must be obtained before shipping the product directly to HIGHMARK. For products shipped directly to HIGHMARK, HIGHMARK will repair or replace the part(s) or product at its discretion. If the product is returned to an authorized dealer for repairs. HIGHMARK will provide the materials to repair the product free of charge, including transportation costs. | |  TENSION ADJUSTMENT Increase or decrease to match body weight. Allows you to rock comfortably, without heavy pushing, reducing muscle fatigue. |  CHAIR TILT LOCK Allows you to lock your chair in an upright position. |  SEAT HEIGHT Raise or lower your feet to rest flat on the floor. Avoids pressure under your thighs, easing blood flow. |  BACK HEIGHT No touch back height adjustment. Raise or lower to position lumbar support in your lumbar area without the use of knobs or levers. Reduces likelihood of back pain |  WATERFALL SEAT EDGE Reduces pressure at the back of the knee, contributing to good blood flow. |  PROPERLY CONTOURED CUSHIONS Support the body effectively, allowing you to sit longer without discomfort |  KNEE-TILT - Standard Feature! Chair tilts from a pivot point, under the center of the seat, allowing you to rock and keep your feet on the floor. When your feet are well supported, enhances blood flow. | |  | |