If you've ever stood in front of a shelf of aluminum foil pans trying to figure out which size you actually need, you're not alone. Full tray vs half tray is one of the most common questions in commercial kitchens, catering operations, and food service — and the answer matters more than most people think.
Here's everything you need to know.
What Is a Full Size Tray?
A full size aluminum foil pan — also called a full size steam table tray — measures approximately 20.75 x 12.75 inches. It's the standard size used in commercial steam tables, buffet lines, catering setups, and high-volume cooking operations.
Full size trays are built for large batch cooking. When you're feeding a crowd, roasting a large cut of meat, or transporting food for a catering event, full size is the default choice.
They come in three main depth options:
- Shallow (1.25 inch) — ideal for sides, vegetables, and foods that don't require much liquid
- Medium (2.25 inch) — the most versatile depth, handles most proteins, casseroles, and mixed dishes
- Deep (3 inch) — built for high-liquid dishes, large roasts, braised meats, and anything that needs extra capacity
What Is a Half Size Tray?
A half size aluminum foil pan measures approximately 12.75 x 10.375 inches — exactly half the footprint of a full size pan. Two half size pans fit perfectly in one full size steam table slot, which is why they're so useful in catering and buffet setups where you want to offer more variety.
Half size pans are the go-to choice when you're cooking smaller batches, managing multiple menu items simultaneously, or working with a smaller oven or prep station.
Like full size, they come in shallow and deep depth options depending on what you're cooking.
Full Tray vs Half Tray — Side by Side
| Full Size | Half Size | |
|---|---|---|
| Dimensions | ~20.75 x 12.75 in | ~12.75 x 10.375 in |
| Best for | Large batches, catering, steam tables | Smaller batches, variety, buffet lines |
| Fits steam table | One pan fills the slot | Two pans fill one slot |
| Depth options | Shallow, Medium, Deep | Shallow, Deep |
| Typical count per case | 50 count | 100 count |
Which One Should You Buy?
Buy full size if:
- You're running a catering operation or buffet line
- You're cooking large cuts of meat or big batch casseroles
- You need standard steam table compatibility
- You want maximum capacity per pan
Buy half size if:
- You're cooking multiple dishes at once
- You want more variety on a buffet line
- You're working with a smaller oven or limited prep space
- You're doing meal prep in moderate quantities
The honest answer for most operations: buy both. Full size pans handle your primary dishes and large batch cooking. Half size pans give you flexibility for sides, smaller items, and buffet variety. Buying in bulk keeps your cost per pan low and ensures you never run out mid-service.
What About Depth?
Depth matters more than most people realize. Here's the simple breakdown:
- Shallow pans are for dry or low-liquid foods — roasted vegetables, rolls, sheet cake, dry sides
- Medium depth pans handle most proteins, pasta dishes, and casseroles without spilling
- Deep pans are for anything with significant liquid — braised short ribs, soups, saucy dishes, large roasts
When in doubt, go deeper. A deep pan used for a dry dish costs you nothing. A shallow pan used for a saucy dish costs you a mess.
The Bottom Line
Full size trays are built for volume and steam table compatibility. Half size trays give you flexibility and variety. The depth you choose depends on what you're cooking. For any serious catering operation, food truck, or commercial kitchen, keeping both on hand in bulk is the most practical approach.
Rhino Aluminum carries full size and half size aluminum foil pans in bulk. Free shipping on every order.