Sheet pans are found in three sizes: full size, half size and quarter size. A standard full size is 18” x 26” and is far too large for a residential oven. They are designed for mass production in a commercial kitchen. Half size pans are about 18” x 13”. These will fit in some residential ovens, but it may be a tight squeeze. Quarter size pans are 9” x 13” and are the best bet for residential use. They can also be used in commercial establishments for making small batches of a less popular menu item.
When looking at metal gauges in your sheet pan, remember that the lower the number, the better the quality. A 19-gauge pan is the most economical gauge and is best to consider when price is the only factor making your decision. 16-gauge metal is a good compromise between quality and affordability as it sits comfortably in the middle. For the highest quality gauge, 12-gauge metal is tops. This heavy-duty pan will stand the test of time and outlast many of your other kitchen supplies.