1200 Series Vinyl Dual-Hinge Folding Chair, Supports Up to 500 lb, 17.75" Seat Height, Dark Midnight Blue, 4/Carton Two U-shaped double riveted cross braces. Features 18-gauge 0.88" round tubular frame. Double hinges for added stability and durability. Unique full size double contoured back and waterfall seat. Fully upholstered seat and back attached with six rivets. Powder-coated frame. Features 0.8 mm vinyl over 1.25-in, 0.9 lb density foam seat and 1.2 lb density back. Color coordinated V-tip stability plugs and polypropylene glides.Our Price Buys you: 4