Carlisle 4401201 Brown Comfort Curve Universal Bus Box Lid 20" x 15" x 0.75" - 1 Each

The design is sturdy but there's a lot of 'flash' on every edge and the inner and outer surfaces too. I'd guess their molds are worn - the inside has humps/craters where the ejectors weren't flush and more flash around every seam in the mold. I've managed to scrape most of it away but now the inside isn't smooth anymore. I bought these to hold bread dough for first rise and they're harder to clean than they should be.