This spark screen works well but has an annoying design flaw: the nuts work loose off the bolt which holds the halves together. I used the screen on less than a dozen occasions when one side came loose and I promptly lost one of the nuts in the grass. I did recover the bolt but needed to get a replacement nut and the problem still exists. I like the screen except for requiring constant tightening. A rod with a cotter pin would be a better method to secure the sides together.
I store it in a shed after use to prevent rusting since that's a common complaint.