We have used a 36" one for years. I was very suspect at first, but it has held up REALLY well.You get what you pay for? They're decent for a chinese made box. I know several folks who have used them for years and I think a couple had to get some cracks welded after several seasons of heavy use. My box seems decently made and haven't had any issues with it and planning on getting a second this year. If you temper expectations I think they are worth it.