I bought a topper from them in 2009, its now 2014 and still works perfectly as the day I bought it. I can now see why they win manufacturer of the year awards! Well worth the money. I choose the 11″ higher than cab height topper with no windows. I stow over $ 9K in tools so I needed a steel topper with no windows. The locks and hinges and vents are all top quality and very secure. Note: I have no corrosion on this topper either so note this when I make the next comment. Hindsight being 20⁄20 my only Regret was I wish I ordered it without a paint finish and took it to a bed liner spray company and sprayed the exterior with bed liner that matches the finish. This way I can be much more rugged with it. The owner is a good honest business and family man. An excellent person to do business with.