Really disappointed with the durability and quality of the Dyna-Glo 5 Burner BBQ. 
I'm only 4 years in, and the Firebox has warped to the point where the Heat Tents (flavourizer bars) fall through. The original Heat Tents had rusted & crumbled, which I first thought was the issue, so I bought brand new stainless steel replacements, only to discover that any placed in the middle would fall through just the same -- meaning it was the actual firebox that had warped. I've seen several reviews on here with the exact same issue since I purchased. 
Would not recommend purchasing this BBQ if you'd like to keep it longer than a few years. You're much better off buying a better brand at the same price point.