- Factory Direct Prices - 800 lb Capacity - 18 Gauge 3/4" Tubular Steel Frame - Guaranteed Lowest Prices - Only Poly Chairs with SGS Test Results - Chosen by the U.S. Army, Air Force, Marines and Navy. Call Stephanie for Volume Discounts. Beige Poly Folding Chairs Seam - welded 18 Gauge ¾" Tubular Steel frame Rear cross brace is 20 Gauge ¾ OLD. tubing. on our folding chairs Chair Size: Height: 31 1/2" - Wide: 17 1/4" - Seat Height 17 3/4" Beige Poly Folding Chairs Injection molded high-density polypropylene with patented color blending throughout. Riveted to frame give our folding chairs overlapping back for extra strength.