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: How can I tell if it will fit? How far does it lift?
Document: At first I wasn't sure about this, but once installed in my chair it's a perfect fit and hold me up.The only improvement might be to make a replacement Pneumatic Hydraulic Gas Lift that is maybe another 4" to 6" longer so my chair is up higher.Thanks for a good replacement product with a good price.
This lift may be called universal, but it was too big for the diameter of the post supporting my office chair. My husband is very handy, having taught practical arts, and he tried everything to get it to work. Money wasted, as far as we are concerned.
I had to watch a video on how to remove the old and install the new gas lift. All in all it is a very easy process, but make sure to use a rubber or rubberized hammer on the base else you WILL damage it. The unit fit the chair and works really well. If it eventually goes out (probably in a few years) we will purchase another one and install it.
This pneumatic hydraulic gas lift cylinder was a direct fit replacement. Installation was quick and easy. The product operates correctly.
This gas lift did indeed fit as a replacement to my office chairs broken gas lift. It was however, about 2 inches shorter when fully extended but worked fine otherwise. The dimensions given by the manufacturer are pretty much right on the money and I have to say that the price just simply cannot be beat when you start looking for pneumatic gas lifts!At the time that I bought this one, it sold for $8.99 and I can still find it in various websites for about the same price.
These are fine but they dont extend very far. Its all in the description I guess but I cant really figure it out from there. Our chairs were a good height for preschool. A very funny moment
I need to return it but am having difficulty. It does not fit the chair. Please help me. Where do I send it?
Minimal amount of difference between lowered and raised positions. Far shorter than hydraulic it replaced. Would recommend a better replacement.
This product worked like I had hoped. It arrived on time and in good condition. I was able to get information and instructions on how to replace it by going to other video sites. It fit perfect in my chair and it's working great. I would recommend this reseller.
This product was as advertised and once installed, worked very well. Frugah would do their customers a great favor by including instructions on how to install the gas lift. I had to phone the chair's manufacturer who mailed me a how-to video. It was easy once I knew how.
Answer: I recently replaced mine - it was a chair I bought 2 years ago from Walmart.  The toughest part was removing the old cylinder.Cylinder sizes seem to be standard - it fit my older chair like a glove.  The lift seemed slightly lower than the original cylinder.