To insure durability and proper use of the products, routine periodic inspection must be made. Inspection should cover all joints, corner blocks, stress points, welded areas, glides, etc. Loosened screws should be tightened. Areas that are welded should be inspected for fatigue. Items that show defects or appear unstable should be taken out of service immediately. Failure to properly maintain the product(s) may void the war- ranty.