PENCO Pallet Racks feature unique beams that assure positive beam to post alignment and uniform load distribution. Three-rivet beam connection locks six ways for greater stability. Upright M-recessed upright frames are made from two vertical posts joined with cleanly welded horizontal and diagonal braces. Upright frame capacities from 18,000 to 30,000 lbs. End posts have support holes punched the entire length for 3" adjustability. Safety load factor is 1.92. Made in USA.NOTE: to build pallet rack you must order both upright frames and solid beams. Add skid supports, spacers, shims, and frame protectors as needed. Call a Certified Product Specialist for assistance.