A full-size sheet pan is a large, rimmed baking tray commonly used in commercial kitchens. You’ll also see it called a full-size bun pan. It’s designed for high-volume tasks and frequent use in restaurants, bakeries, and busy kitchens.

• Typical build: Aluminum or stainless steel with a rolled rim for strength.
• Common tasks: Baking cookies in big batches, roasting vegetables, cooling items on racks, prepping ingredients, and short-term storage.
• Why it’s popular: The generous surface area helps streamline batch cooking and baking.

If you’re cooking at home, consider your oven size before choosing this format, as it’s larger than most residential pans.

Most full-size sheet pans are approximately 18 inches by 26 inches with about a 1-inch rim. This size is widely used in commercial settings and appears throughout our assortment.

• Exterior dimensions: About 18 in. x 26 in.
• Rim height: Around 1 in., depending on the model.
• Small variations: Some listings may note lengths like 25 3/4 in. due to rim style and manufacturing differences.

Because dimensions can vary slightly by brand and rim design, it’s a good idea to review the exact measurements on the product page, especially if you’re checking for oven, rack, or storage compatibility.

The main difference is size, which affects capacity and where each pan fits.

• Full sheet: About 18 in. x 26 in. It’s a commercial standard, ideal for large batches and typically used in bakery or restaurant ovens.
• Half sheet: About 18 in. x 13 in. It’s roughly half the surface area and is commonly chosen for home ovens and everyday baking.
• Practical choice: Full sheets offer more space; half sheets are easier to handle and store in most home kitchens.

Measure your oven interior and review product dimensions to decide which size aligns with your space and baking volume.

A quick measure at home can help you decide before buying. Many residential ovens are smaller, and some products note “measure oven recommended” or “will not fit residential ovens.”

1. Measure width: Inside the oven, from rack guide to rack guide.
2. Measure depth: From the back wall to just inside the closed door.
3. Compare sizes: Look for about 18 in. x 26 in., plus a little clearance for the rim.
4. Check rack and door: Ensure your chosen rack position and door angle leave room for the pan.

If the depth is tight, a half sheet may be a more practical everyday option.

Gauge refers to the metal’s thickness. The number is inverse: lower numbers generally indicate thicker, heavier-duty pans; higher numbers indicate thinner, lighter-duty pans.

• Lower gauge (e.g., 12): Thicker and heavier; often described as extra-heavy duty for frequent, high-volume use.
• Higher gauge (e.g., 18–20): Thinner and lighter; often labeled medium duty and easier to handle.
• Choosing a gauge: Consider how often you bake, how much food you load, and your handling preferences.

Product listings call out gauge so you can match durability and weight to your kitchen’s needs without over- or under-buying.