This Quick Ship 21 foot commercial bleacher seats up to 56 people for school and sporting events! Made with commercial grade aluminum with welded joints and 4 rows of 2" x 12" anodized aluminum seat planks and 2" x 10" foot planks. All hardware is hot-dipped galvanized for strength. Need outdoor furniture fast for an event? Call our friendly staff to get a quote on our Quick Ship Outdoor Furniture. • Quick Ships in 3 Business Days for quantity up to 4!