Primed and Powder Coated Rectangular Steel Tube Dimensions: 2-3/8" x 1-3/16" x 1/8" Profile Length: 236" (19' 8") Steel Insert is used to reinforce 381001 profiles for the free-standing KOMPAS aluminum partitions and partitions exceeding 12' in height. Product Warning: Stock lengths must ship common carrier unless specifically cut for UPS shipment.