Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: The width shown, 12 1/4":  Is it the largest dimension including the rim on the top?  My storage opening is 12 1/2" - will it fit?
Document: I purchased this pack of six storage boxes for work -- they've been just perfect for so many uses! We us them for:1. Putting out iced bottles of water for casual luncheons using the "reusable"Icy Cools Reusable Ice Cubes.2. Transporting loose paperwork home or from one office to another.3. Transporting brochures and "give-aways" to conferences and college fairs.4. Organizing coffee and snack supplies for events.5.
The product's quality is as expected - strong, stackable and child-proof. My grandniece was getting into my cardbord boxes I had, however, expected it to be equivalent in size and use to an office storage box. To obtain the same effect, I have to lay the container on it's side. While the 8x11 1/2 folders fit, I cannot view folders as I had anticipated. .Sterilite 19858006 30-Quart Ultra Latch Box, White Lid See-Through Base with Titanium Latches, 6-Pack
We ended up ordering 12 to get our &#34;basement stuff&#34; out of cardboard boxes and into something that would be both a little more protective and we could tell what was in the box w/out opening it. These just plain work.The only thing we dont like is the lids aren't really up to stacking. If you fill your boxes tight, this isn't a problem as the contents will suport boxes placed on top.
I needed a way to have supplies and equipment organized for jewelry shows that I go to. These are great, they are not too heavy for me to carry, I can see through them and the handles work good. I don't have to fight them to get them open. I have 2 different sizes of these storage boxes,  one size is taller than the other.but they stack well on top of each other.
Ordered these containers for extra closet storage in my efficiency apt. They stack on top of each other easily as the lids are made to hold another box without sliding. Lids fit tightly, holds a lot, and is see thru. I also own the shoe boxes by Sterilite. Sterilite is my preferred brand for storage.
2011 is my year to organize. I have a very small house with limited storage. I like these smaller 18 quart bins because yes you can't load a ton of stuff in them you can get more specific with organziing. They stack so nicely ontop of each other. The covers to have a rounded bubble on the top so when stacked together they are fine but if you wanted to put a different box on top you may have it not fit perfectly flat.
I just read "18 Quart" and wanted something a little bigger than my Sterilite 16 Quart ones (which have FLAT sides and bottom). There are two HUGE INDENTS all down the sides, which means the insides have 1 1/4" extended inside on EACH side. End result for AVAILABLE INSIDE SPACE is 13" x 9".
I bought these about two years ago to organize things in my garage, and they have held up very well. Here is a summary of my usage experience:POSITIVES:1. They look nice and are stackable. I have stacked no more than two (quite full) and it held without any problems.2. They latches are firm and sturday and unlikely to break.NEGATIVES:1. These are not rectangular with fairly deep grooves all the way down under the latch.
These Sterilite containers are awesome. They hold well, you can see the contents, and they stack well. I use them to sort baby clothes (0-3, 3-6, etc) and shoes (4, 5, 6, +), and they fit just right for each size. Just put a label on the outside, stack them, and store them. You have an easy organizing system.
I love these very sturdy bins, however the divots on the sides really limits what I am able to store in here (this is the only reason it is not a 5 star rating). These open and close very easily and fit perfectly under my bed. If I had room for the larger bin I would definitely go with that. I can fit 2 pairs of boots or 2 pairs of shoes in each of these smaller bins.
Answer: 12-1/4" is the measurement of the lid at it's widest. So they will fit into 12-1/2" opening.