National Public Seating premium folding chair with double brace. Made with your comfort in mind, 200 series steel folding chair features our unique full-size back, which has a double contour to support your entire back. The seat features a waterfall front. The frame is made of 18-gauge steel tubing with two double-riveted cross braces, one in the front and one in the back. Each side has double hinges and V-shaped rear leg caps for added stability and durability. Electromagnetically welded seat back. Powder-coated frame. Two U-shaped double riveted cross braces. Features 18 gauge 7/8" round tubular frame. The Body Builder line chair. Color coordinated polypropylene glides. Non-marring replaceable glides that match frame color. Measures 18-1/4" width by 29-1/2" height by 20-1/4" depth. Folded measures 18-1/4" width by 38" height by 2" depth. Seat measures 16" width by 17-1/4" height by 16" depth. Back measures 18-1/4" width by 8-1/4" height. 10 Years warranty. MAS Certified Green. Products meets or exceed applicable ANSI/BIFMA standards.