Plastic, Foam, Metal, Vinyl, Plywood HEAVY-DUTY STACKING CHAIR: Offers a comfortable and reliable seating solution that creates a welcoming atmosphere in lobbies, offices, professional cafeterias, training rooms, libraries, or business centers COMFORTABLE AND DURABLE: Contoured seat cushion provides optimal comfort for your guests or clients, and the sturdy 18-gauge steel frame with a powder-coated finish holds up to 550 lbs. of static weight GANGING BRACKET: You can easily create a uniform row seating with multiple stacking chairs in your lobby or venue thanks to the conveniently included ganging bracket HIGH-QUALITY CONSTRUCTION: Heavy-duty frame features bumper guards that prevent the finish on the frame from being scratched when stacked, and the frame also has plastic glides that protect flooring surfaces when moving the chairs STACKABLE DESIGN: Measures 19.75"W x 21"D x 31.25"H and stack up to 12 high for compact storage in between uses, making them ideal as a spare seating option