The hangrail height adjusts from 45"high to 67"high. Uprights and hangrail are constructed of heavy duty 1-1/4" diameter plumbing pipe. Includes four 3" casters, 2 locking and 2 non-locking. Includes four rubber tipped shelf supports. The pipeline Collection is a uniquely designed merchandising Collection based on the traditional industrial grade clothing racks popularized in new York's garment center. This stylized and refined version incorporates interconnecting plumbing pipes and various plumbing connectors.