High-impact polypropylene and durable steel construction Contour styling with generous seat and back Contour styling with generous seat and back Can be stacked up to 15 high 17 3/4in.L x 21 1/4in.W x 30 1/2in.H These Safco Stack Chairs feature high-impact polypropylene and durable steel construction. Contour styling offers a generous seat and back. Powder-coated tubular steel frames include plastic glides for longevity and mobility. These chairs can be stacked up to 15 high. 17 3/4in.L x 21 1/4in.W x 30 1/2in.H. Fully assembled.