Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: is this only for 4 cup makers, or is it a number 4 filter size?
Document: Much like many of the other reviewers I didn't pay close enough attention and thought this was a number 4 (based on the GTF-4). Really it's a 4 cup filter (tiny). It appears to be of decent quality, but since I can't test it with my 12 cup coffee pot I'll just leave it at 4 stars which is the current average rating. I guess I'll go buy an actual #4 filter to add to my new reusable coffee pot filter collection.
paper filters for these size coffee makers are costly. I decided this was by far the best option. Am using the wire filter and very glad to have it.
The filter fits loosely in the 4 cup coffee maker. The grains easily spill over and clog the release button. Because of that, when the pot is removed, the coffee continues to flow onto the burner. It seems like it's the wrong size.
Sure enough, this filter will sit in the Gevalia basket, dwarfed by the size of the 12 cup coffee ground holder. The grounds, however, for 4-5 cups merely fill to about 1.5-2 inches in this filter. I'm glad I don't have to return it, and if we need to make 12 cups at a time, we'll use a paper filter from the box of filters we've already purchased, yet will likely not be used.
The item is nicely constructed. But...if you look at Melitta or similar filters, this is equivalent to a Number 2 filter, not a Number 4 filter. Buy the GTF-4 filter only if you need a Number 2 filter.
It is for 4 cup, not #4 coffee cone or maker. I guess it is about the size of #2. So, if you have non-Cuisinart coffee maker, keep this in mind. I use a cone to hand drip the coffee and I only make about 1 or 2 cups at a time so it doesn't really matter though.
this works way better than I thought. I do not have coffee grounds in my cup like I expected and the gold screen has not become tarnished or brown. Also the screen has not become clogged. The unit is the same as when I bought it even after a number of uses. One down side might be that the filter must be washed out after dumping the grounds. These washed out grounds go down the sink and into the pipes.
This would earn a five star rating, but it is a four cup size that still works fine in a five cup coffeemaker. Still it would be nice to have the size that fits the original.
There was absolutely no way to fit the filter into the top of a 4-cup Cuisinart coffee maker! Maybe a 12-cup coffee maker would accommodate the filter?
this filter is great! at first it seems like it doesn't fit perfectly in the cuisinart 4-cup coffee maker but i haven't had any problems with it. it's durable and easy to clean and SO much cheaper and easier (and less waste!) than the paper filters.
Answer: This is for 4-cup makers.  It is close to a #2 filter size.