Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Is this pan 12' or 12.5'..i used the product number on other sites and it says 12.5' not 12' like here..
Document: This product not is warp-resistant. It lasted me approx. a half year and then warped at the bottom. It says it can handle the dishwasher. I had always hand-washed it up until a month ago. Then it warped. I suspect this has to do with the dishwasher. Either way, it doesn't cook evenly anymore due to the warping.
I bought this pan together with theLodge L10SK3ASHH41B Pre-Seasoned Cast Iron Skillet with Red Silicone Hot Handle Holder, 12-Inch, one because I'm a pan snob, and two because I wasn't sure how I would like cooking with cast iron. (Short answer: I don't.) I've been very impressed with the performance of this pan.
I purchased this to complete the T-fal set I purchased for my wife last January. It seems like almost every recipe we make calls for a 12 inch non-stick pan, and we were always making due before this purchase. The pots and pans we bought a year ago have held up very well. The heat is evenly distributed, the coating is top notch.
I'm on my third T-Fal Hard Anodized Nonstick skillet and can echo the other sentiments here that it is the best non-stick pan I've ever used. It's comparable to any other name-brand pan for the price and performance and it comes out a clear winner. Cooks without ANY added lubrication if you like and still it cleans up completely in your dishpan with no scrubbing. What's not to like?
This T-fal 12 inch Saute/Frying Pan is a Great Skillet, it works well on my Electric Stove Top, no matter what I Saut&eacute; or Fry it does a good job, it is very Light another reason why I like it, made of Beautiful Hard Enamel outside Durable and Stain Resistant, the Pro-Metal interior is exceptionally Durable and Scratch Resistant Safe to use with Metal Utensils although I always use Wooden Ones.
I've been using this pan for 4 months and it still looks like new, with no degrading of its non-stick properties. Though there are grooves incised on the underside of the pan, it still has large enough flat areas to sit flush on my elderly Amana cooktop, which is essential for getting enough heat out of the stove's burners. I like the thermo-spot button feature for accurate preheating. This appears to be the pan that is used on the America's Test Kitchen and Cook's Country TV shows.
I bought this based on a top rating on America's Test Kitchen. I have the 10 and 12 and like them a lot.
I have used this brand for years and when the old ones wore out I decided to try them again, so far I have no (well only a very minor one) complaintsThe cook surface is excellent, any minor scrapes or bumps with a metal tool doesn't seem to damage it like some of the older cookware I have used. The non-stick properties are excellent.
I'm a modern chef who prefers light, high tech cookware over the technology of the 1800's, plain and simple, and that's why I rate this pan as a five start product, even with its minor drawbacks.
This is an excellent product in every way was recommended in one of my favorite  America's Test Kitchen cook book's.PASTA REVOLUTION. There are 2. important features, 1 . The nonstick surface will tolerate the careful  use  of regular utensils,2. The therm-o-spot lets you know when the pan as reached the proper heat for cooking.It's really a fine tool at a reasonable price.Jo Anne Reece
Answer: 11 7/8 I.D. at the top.  12 1/8 O.D.