Make walking up and down simpler on your fans when you select the 4 Row - 7.5'L Low Rise Bleacher. Uniquely designed frames allow 4 rows of seating without having the need for chain link fencing. The first row has a seat height of 12" and the last row has a seat height of 30". Each plank measures 10"W. Frames are 100% welded aluminum angle; seat planks are anodized aluminum and won't rub off on your clothes. Standard models include single foot planks; preferred models include double foot planks