Winco ALRK-15 15-Tier Aluminum Sheet Pan Rack with Hard Top and Wire Slides 15-tier rack with slides and hard top can be used as cutting board stand 14 gauge 6063 aluminum with 1" extruded aluminum tube frame Casters are with full swivel, 5" diameter by 1-1/4" Ships knocked down Capacity: Up to 15 full-size (18" by 26") or 30 half-size (13" by 18") sheet pans