9000 Series Stack Chair is the perfect classroom chair that will last year after year. Chair is constructed from durable, long-lasting, injection-molded polyethylene. The 18" seat height meets your smaller student's sitting needs. Tubular steel frame and one-piece, molded shell enhance stability. Four-leg chairs stack up to six high for space-saving storage. Iconic, classic look complements any classroom style.9000 Series Stack Chair is the perfect classroom chair that will last year after year. Chair is constructed from durable, long-lasting, injection-molded polyethylene. The 18" seat height meets your smaller student's sitting needs. Tubular steel frame and one-piece, molded shell enhance stability. Four-leg chairs stack up to six high for space-saving storage. Iconic, classic look complements any classroom style.