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: My drawer is 18 15/16 x 20 3/4" will this fit in my drawer?  It states it can be trimmed but I wasn't sure if it would trim to this size.
Document: Make sure your drawer is deep enough. The drawer I put this in is 3 1/4" deep and only the first and last "shelves" of this insert will hold regular size spice containers (the round glass type), no matter which way it is placed in the drawer. The middle two will only hold the rectangular tin/plastic spice containers, and only lying flat so this takes up a lot of space but you can clearly see the name of the spice.
When the Vance Spice Drawer Insert arrived. I discovered that my drawers were too shallow for it to fit. Hence $13.90 wasted in shipping it to and fro. All they need to do is specify the MINIMUM drawer depth in their specifications. (Incidentally, the minimum depth seems to be about 3 and 3/4 inches.
I've used these in 2 kitchens. The two drawers I have for spices in my current kitchen are 19' wide (internal measure) and 4" deep. The product depth is 1 1/2" deep and each riser is 3 1/4" high so it fit perfectly. In my last kitchen my spice drawer was extra wide (27") so used two, cut one of them down and overlapped them slightly. This worked just fine.
The insert works fine,even for bigger bottles of herbs and spices (our drawer is 4 1/2 in. deep). A whole lot more cost-effective than the $75 estimate we got from the cabinet guy. However, it's not so simple to "trim to fit."
I ordered this for a client with a large spice collection. It fit perfectly in the drawer and was a very sturdy item. I didn't need to trim it but it seemed to me that it would take a saw rather than a pair of kitchen scissors to do so. I also don't think I've ever had anything shipped to me that was packaged as well as this item was.
When I ordered my Spice Drawer Insert, I was reading the trim to fit, as a convenient way to adjust this to my drawer size. NOT so. The plastic is ABS, an extruded or thermo formed styrene, which is brittle, and very tough. Thus scissors, nor X-acto, or Box cutter were easy solutions to making this insert fit my specific drawer.It is mentioned in the fine print that they will custom cut your insert.
I'm thrilled to finally buy something to organize my spice drawer and this product was the answer. All my spices are organized and easy to find. My only complaint is that we had to trim it to fit the drawer. Once we got it in the drawer it looked like a custom organizer. It holds 45 of my herbs and spices that are in different size bottles.
Loved that we could trim these down to the exact size we needed. It fits perfectly holds all of our spices. Cut easily with a jigsaw with a all purpose fine blade. Would definitely buy again!
Once I got this insert trimmed to fit the drawer, it does what it is supposed to do--allow spice containers to be organized.
I did not realize that you need a saw to trim the insert. I guess I should have investigated this product more closely. $20 down the drain!
Answer: You may not need to trim as your dimensions are close to those it comes with. If anything it may be a bit short on your 20 3/4".  I trimmed mine with sheetmetal shears and that was easy as the plastic is not brittle.