We build our Heavy Duty series tables by combining heavy wall tubing with our exclusive Cinch-Lockâ„¢ welded corner design. Mark was asked to test this 30" high bench by adding particleboard  until it fell down. He came back with this photo, but couldn't add any  more particleboard, as he had reached the ceiling.  
                           
                          The strength of this bench is achieved by the use of heavy  electro-welded tubing and our exclusive Cinch-Tite corner assembly  system.  (We found that angle iron and channel iron twisted when  heavily loaded).  
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