What I loved MOST about this product was actually how thoroughly they described it's dimensions.  Not just the overall... but the internal measurements (subtracting out the width of the rim).  I bought this little guy to hold woodchips inside a smoker instead of wasting foil by rewrapping wood chips each time we had to trade them out.  The spot for it in the pan is a curved rectangular divot, the edges of which were steep so if it didn't fit, the pan would tip.