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: Do they fit a standard 3 gallon glass carboy?
Document: We bought these caps to fit our glass 5 gallon carboy to keep the water from spilling out when we transport our water from the store to our home. The caps came super fast and they even wrote &#34;Thank you Rosie&#34; on our receipt which was a nice personal touch. The caps fit perfectly on our 5 gallon glass bottle and work well for what we needed them for.
I ordered two of these bottle caps thinking they would be perfect for my 3 and 5 gallon water bottles when I went to get them refilled. It turns out these caps are too big for the bottles. I am not sure what these are supposed to fit onto, but it is not your standard water bottle.
I ordered 5 of these items (there are two caps per unit), and I'm very pleased. They fit perfectly snug on standard 3/5 gallon bottles (like the ones I'd get from the supermarket or water delivery). They are easy to remove, and can be reused over and over again (I use it to fill up water bottles from a home filter).This is a great way to store a small emergency stash of water for example. All in all, I highly recommend these caps, and they are a good deal (with very reasonable shipping costs).
What else could I say? I have two, three gallon, glass water bottles for my office water dispenser and these caps feel like a perfect fit to seal those jugs tightly in an upright position. I have never tested the cap by placing the jugs in a horizontal position, but why would I?
I had bought an odd size 3 gallon jug and need caps to fit them. These met my expectations although pricey
Bought these to use for our 3 gallon water jugs that we refill at local grocery stores. They fit tight and there's no leaking!
The Dew Cap replacements fit my glass water bottles perfectly!!! Good value for the money although the shipping was more the the product it self! !
it was saying its gonna fit on 3 and 5 gallons bottle.but i have two 5 gallons with a rubberband around the bottle neck.These caps are not for my use.because they don't fit on my bottles.
These caps fit very well, and I even tried to get the carboy to leak. This is a simple purchase, around $5, but I also received a hand written letter from the owner thanking me for my purchase. If I should ever need anything this company sells I won't shop further. To the owners, "You are very welcome". Shipping was quick and no complaints.
these are good for non-screw-on bottles only. would recommend for 3 gal bottles, good replacement caps, keep them on hand.
Answer: Yes the Dew Cap replacment fit the 3 gallon glass carboy.