Lorell 4-Carton Stack Chairs, 18 by 22 by 35-1/2-Inch, Blueberry/Black Fabric/Charcoal Frame Chairs offer rugged, 7/8" tubular frame that holds up to 250 lb Stack up to eight high Upholstered stack chairs feature a round-back styling, a powder-coat finish and a seat with 1-1/2" thick for seating comfort Chairs offer rugged, 7/8-inch tubular frame that holds up to 250 lb. Stack up to eight high Upholstered stack chairs feature a round-back styling, a powder-coat finish and a seat with 1-1/2" thick for seating comfort Chairs offer rugged, 7/8" tubular frame that holds up to 250 lb.