These bleachers have a capacity of 28. Tip N Roll Bleachers are ideal for those areas and occasions where permanent seating is unreasonable. Each unit includes permanently mounted 5' casters and wood sleepers to prevent scuffing or marking of floors. Standard galvanized frame. Please note In many areas of the country, there are local building codes which require the use of guardrails along with extra footboards and risers on rows higher than 30'. Please check your local codes to determine if guardrail assemblies are required in your community. To order these 21' tip n roll bleachers without double footboards, click here. To order these 21' tip n roll bleachers with 3 rows, click here. Please note that this is a freight item and can not be expedited. Please note that some assembly is required.