We consider this student stack chair to be the premier stack chair - essential for every school and classroom setting. This ergonomic stack chair provides a comfort-formed back and contoured waterfall seat set upon a durable metal frame. This versatile chair is ideal for both indoor and outdoor settings. With the ability to quickly store the chairs, it allows for the space to be used again for other purposes or when cleaning is needed. This heavy duty plastic stack chair is sturdy in construction to withstand regular use and frequent stacking. To make transporting even easier, equip yourself with the appropriate sized stack chair dolly. Multipurpose Stack Chair 880 lb. Weight Capacity Stacks up to 20 Chairs High Black Plastic Seat and Back Ergonomically Contoured Design Vented Back allows air circulation Seat Drain Holes assist in drying Easy to Clean Double Support Rails 0.6"x1.18"x0.05" Metal Gauge Black Powder Coated Frame Finish Non-Marring Plastic Floor Glides Limited Lifetime Warranty on Frame Designed for Indoor and Outdoor Use Designed for Commercial Use Ships Fully Assembled Color: Black Finish: Black Metal Material: Metal, Plastic Weight Capacity (lb.): 880 Back Size (in.): 17.50W x 16.50H Seat-Size (in.): 17.50W x 17D Upholstery: Black Plastic Seat Height (in.): 17.38H Overall Dimension (in.): 21W x 23D x 32.13H Quantity Per Pack: 5 Total Weight (lb.): 45