Well, I just bought a Weber Spirit E310 bbq based on 2 years of research, so I thought I'd get this smoker box to use with it. Reviews from the big box home build stores weren't that great and neither were the ones on Weber's own website for this smoker box, but I thought that maybe some people maybe just received bad samples. So, I went ahead and bought one here on 鶹 anyway. After the first use, the lid warped, just as many others have claimed. It's still usable, but I have my doubts as to how long this will last. The design is good (with holes on the bottom and top)...but I can't for the life of me understand why they would opt to use stainless steel instead of CAST IRON! For $35, I'd expect a better built, longer lasting, heavier unit. I'm debating sending it back (Weber would send me a replacement, no questions asked) but I'd just be getting another cheap ass, weak material box, that would also warp, same as the original. I've got a couple of cast iron alternatives in my cart from other manufacturers, which I think I'll try. Honestly, Weber...what are you thinking??!! You build great quality grills that last 10-20 years, with porcelain coated cast iron grates and high strength, thick boxes; yet the smoke boxes (which need to be on high heat to get the wood chips to smoke every time it's used) you make out of cheap, thin stainless steel. Sorry for the rant, but for $35+tax, I expected better, especially when a good cast iron one from a competitor costs $5-10 less, and will last for years