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Question: A dimensions query.  Is it 18 x 13 across the top (from rolled lip to rolled lip) or does it measure on the bottom and thus is actually bigger? Thanx.
Document: I bought the 13" x 18" size to use with my silicone baking mat. It's heavy, 18 gauge aluminum, and works perfectly. I did hand wash it before and after use and there was no discoloration. Would recommend for a sturdy, economical baking sheet.Cook Healthier Food, Save Money and Time in Cooking and Cleaning! Frazoni Non-stick Silicone Baking Mat Will Help You. No-risk Purchase: Get What We Promise or Get Your Money Back. Top Quality, Perfectly Sized, Durable.
Fits well in my Breville BOV800XL smart oven! The outside dimensions are 9 5/8 x 13 x 1 1/8 high.
I had been limping along with some crappy baking sheets I bought at Ralphs. I bought this and the USA Pan 13 x 18 Inch 1 Lb Aluminized Steel Jellyroll Pan with Americoat, and love them both.
Because of this, I later bought theThunder Group 18 Inch x 13 Inch Half Size Aluminum Sheet Pan, which is dishwasher safe. If I had to compare, the quality of the Nordic Ware is slightly (just slightly) better quality, but for my needs, being dishwasher safe makes the Thunder Group pan better and more useful for me.
I do understand these cooking sheets are supposed to be decent quality. I've worked in a couple restaurants in the past and have experience cooking. Overall this sheet isn't too bad. I bought one as a gift for my wife for christmas. For some reason I was thinking it'd be bigger (my fault, the dimensions are on the product title/description) so I had to buy a bigger one at a store last second for christmas to get what she actually wanted.
I bought the Nordic Ware 13&#34; x 18&#34; half sheet pan and it absolutely meets all of my expectations. It is nice, solid bakeware at a fantastic price. That being said, this isn't super heavy duty (in terms of gauge), so I also purchased Wear-Ever Half Size Natural Finish Aluminum Sheet Pan by Vollrath, model #5314, here off Amazon (based off America's Test Kitchen recommendations) to round out my collection.
This pan (Nordic Ware Bakers Half Sheet) is almost what I've been looking for but not quite - hence the 4 star rating. The pan does pass the "no warping" test with flying colors, even at 425 degrees, and cookies come out fantastic. But ... it's not as heavy as expected and the sides are slanted so the pan's measurements are misleading. The 13 x 8 measurement is at the top of the pan, outside to outside.
I got this in conjunction with theFox Run Silicone Baking Mat, 11-3/4 by 16-Inch. I have used this Baking Sheet a lot since I purchased it, sometimes in conjunction with the baking mat and times without and it seems to do an excellent job of baking evenly across the pan. My cookies seem to cook better and cook more evenly (not burn on the bottom or be mushy on the bottom and done on the top (like with stoneware).
A well built pan (barely fits in my oven, but I'd guess that's a standard size, just wanted to mention it in case it wasn't; some may want to measure before ordering the large sized pan). My old biscuit pan was falling apart after years of use. This pan seems very well made and thick enough to distribute heat well across it's surface(does biscuits great, and whatever else I've thrown on it so far by the way). Wish I had bought it years ago now.
Top quality, American made. Everything bakes evenly; they are very sturdy and clean easily. We loved them so much we bought two of the 18 inch pans. We basically replaced our stoneware baking sheets which weigh a ton.
Answer: That's rolled lip to rolled lip dimension. Bottom dimension is 16.5" x 11.5". It's a standard half-sheet size.Also...if you're buying these, buy the rack inserts too. Great for foods that need air circulation on both sides when cooking.CIA 23304 Masters Collection 12 Inch x 17 Inch Wire Cooling Rack, Chrome Plate Steel