Scope:
It is the intention of this specification to procure a chair for 24hour, 7 day week use.  This chair is to be  different from traditional office chairs in that this chair is intended for 24 hour per day  use, seven days a week, not 8 hours per day, five days a week.  Maximum comfort and adjustment will be necessary  while incorporating ruggedness and repair ability to minimize long-term cost.

Description:
Chair must meet both ANSI/BIFMA standards and GSA Intensive Use Chair Performance tests FNEW 83-269E.

Shape of chair back must conform to the "S" shape of the spine to fully support occupant.  To further accommodate the user, a fully adjustable lumbar support shall be incorporated.  Lumbar shall be pneumatic and must be adjustable from a  seated position.

Adjustments shall include, but not be limited to, height and tilt adjustment with ability to lock into upright position.  Tilt control shall be torsion bar, knee tilt chair control with weight tension adjustment.  Cylinder shall be certified to 100,000 adjustment cycles and filled to a minimum of 500 Newtons.

Chair is to be equipped with a seven leg steel base to add strength, balance and a 25% increase in the ease of mobility.  Seven-leg base must have stabilizer ring at joint for added strength.   will be 60mm in diameter and be rated at a minimum of 165 pounds each. (Anti-static  may be specified as an option)

Armrests are to be C-loops, ergonomic Imperial or Tuff Pads.  ease of mobility.  Arms are to be independently adjustable in width and height without tools and removable with a single thumbscrew.  Imperial and Tuff armrests will be capable of  swinging out of the way to prevent damage to arms or furniture when chair is pushed close to the work surface.  (Arm type to be be specified at time of purchase)

Construction:
Chair frame is to be manufactured of 10-gauge steel and to insure rugged construction with as few moving parts as possible.  No component of the chair is to be constructed from wood.  (Screws pulling loose from wood construction does not allow repair where the screw is pulled out) Chair is to have a minimum of foam cushioning.  Foam is to be user replaceable by removal of the seat covering material.  All components of the chair will attach by screw or Velcro, or snap to aid in future repair.

Suspension:
Chair suspension shall be a dynamic membrane suspension made from a high strength "co-extruded" elastomeric filaments woven together with polyester yarn and bonded and stretched over a defined ergonomic shape.  The membrane  will distribute the weight equally over the seat surface and keep the body relaxed with improved lower body circulation.  The blood flow restriction of standard foam and metal spring chairs will not be acceptable.  Suspension is to be guaranteed to maintain its shape and resiliency for a minimum of 10 years.

Covers:
Chair covers must be able to be removed and replaced without tools in a matter of minutes.  Fabric to be incorporated with Nano-Pel™ technology to offer superior stain and liquid repellency.  Fabric must be able to withstand 1,000,000 double mesh rub.  It must meet fire code standard CA-117.  (color to be specified at time of order)

Warranty:
Chair must have an original manufacturer's warranty on mechanical components to be free of defects in material and workmanship for at least six years with maximum working capacity of 550 pounds.