KI Stack Chairs feature injection-molded polypropylene shell with rounded edges that is easy to clean. 18-ga. steel chrome square leg frame. 14-ga. cross braces offer extra support. Plastic glides. Nylon bumper protects walls. Stack vertically up to 12 high for 6'8" door clearance. Meets or exceeds ANSI/BIFMA standards. Order in quantities of 4, priced each. Made in USA.