I bought two of these yesterday in store, when I tried to use them today I found that they didn't even fit into my oven! I have a standard domestic oven and feel it was reasonable to assume that these trays would fit into it. I am sorely disappointed in this item and would definitely return them if it wasn't yet more cost to me to spend time and money travelling back to the store. I am usually very happy with products from Lakeland however in this case, I feel this is a glaring error. Another review mentioned they had warped in the oven, I couldn't even manage to get that far! Very unhappy!