Instruction: Answer the given question using the supporting document.

Input:
Question: How deep is the inside of the griddle ?
Document: We had been struggling for several years with a smaller, much more expensive, "nonstick" pan that was completely unsatisfactory (too small; everything stuck to it; difficult to clean). This one is far superior in every respect, and cost half as much. Note: what looks like a *raised* inside ledge is actually a trough for grease, etc., which works very well. Highly recommended.
Cuisinart told me to wrap it up, but not seal it......take it to the post office and get a receipt for the postage....put the receipt and my letter inside the box, then seal it and wrap it. When Cuisinart receives it, they will send me a new one, plus reimbursement for the postage. I will do that, but what a pain! I am very unhappy with Amazon. Bed Bath and Beyond would not put me through this.....neither would Costco.
It was a replacement for an older one that the coating was peeling on. The only issue found is that the griddle warpped the first time it was used.
I chose this griddle for the finish. I have used this several times, and it is easy to use and easy to clean!
The griddle is not as heavy as the Pampered Chef griddle I have but it works well as a backup for less money than the Pampered Chef.
After only a few uses this griddle warps when placed on heat, pops up in the center and it sort of spins on top the range. I didn't return it but probably should have.
Length and width are what I was seeking but the grease collection trough around the perimeter prevents the griddle from resting properly on the stove burners and therefore wobbles when in use.
I love this griddle. It is just the perfect size to fully cover 2 burners. I can make 6 pancakes at a time on it and that makes breakfast cooking so nice and easy.
I was very disappointed when I received the griddle. The bottom only rests on a ridge around the outer edge of the griddle. It is not appropriate for use on flat cooktops. Neither the picture or produce description indicated this.
Awesome griddle! Perfect size for gas range. Some of the others I've tried have not been wide enough to cook things like bacon...this one is 13" and offers plenty of room. Feels and look great too!
Answer: There is a drip trough all the way around, about 3/4 inch wide.  The depth into this drip trough from the lip of the griddle is just under 1 inch.  I guestimate the drip trough to be about 1/4 inch deep.