I just called my neighborhood grocery store and a lady that works in bakery told me that a half sheet is 26x18. I asked her do they put two 1/4's (13x9's) together and she said no. They have a 26x18 pan. OKAY.. So I asked her what size is the full sheet and she said (2) 26x18's put together. Fancy that.

Benisha

LOL, your neighborhood grocery store bakery lady is full of sheet.

The industry standard for a FULL SHEET is either 16" x 24" or 18" x 26". A quarter sheet is 9" x 13" and a half-sheet is 12" x 16" or 12" x 18". Confusing, I know, but a full sheet is DEFINITELY not two 18" x 26" pans.

Back when GC's were still baking a full sheet of 26x18 was baked - we cut it in half for a half sheet and in 4ths for quarter sheets.

But since the ovens I use are slightly too small for a full sheet pan, I bake in quarter sheets - half sheet having 2 quarter sheets side by side (13x1 and a full is 4 quarter sheets together (26x1