Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: How tall is the space between the shelves?
Document: I bought a pair of these bookshelves to match the desk furniture, and I love the look of my office! The shelves are NOT tall--waist high on me--so keep that in mind, but I wanted space for plants on top with a picture on the wall above, so they are just what I wanted. Shelves are a good height for my larger books and some picture frames and decorative boxes. You won't be disappointed with these.
I was disappointed by this. I bought this over a set of shelves being sold in my local store because I was looking for a taller shelf unit. I wish now I had bought and stacked 2 units from my local store, which would have been about the same cost, but would have given me a tall well finsihed shelving unit. The differnce in wood quality and  manufacture is stark. This is a roughly made piece of furniture in terms of finishing.
That about covers it. I haven't had any wobble at all. The shelves are fixed so if you want adjustable don't get this one.If arrived in good condition, the packaging quite adequate. It went together in very little time. The shelves are solid wood half an inch thick, so they don't bow under the weight of a shelf full of art books, which it is tall enough to accommodate.Also, it matches the honey color writing desk very well. They make a good set.
Got this for $59 on a Fri sale and found it a good value. Good quality wood went a long way beyond typical particle wood shelves at office stores for comparable prices. Tall deep shelves are good enough for large coffee table books which I really had an eye out for. Had one shelf chipped due to shipping but was able to glue it on with minimal blemish and I positioned it towards the rear anyhow where it couldn't be seen.
Needed horizontal space for my study. This unit was easy to assemble and is decent quality. I would recommend it for a simple, functional unit.
i needed a tall, slim bookcase to put at the foot of my bed in a small bedroom so i could put my 37" t.v. on!! sweet!! this bookcase served the purpose. my only gripe is that for a DIY item i felt is was overpriced. ($100)
Needed a specific size/type/color of shelf unit for a space in my bedroom, this fit the bill perfectly! Put it together by myself in a couple hours. Some of the pre-drilled holes didn't line up the best, but made it work. Overall I'm quite happy with it.
I have bought 2 of these a few months apart. I bought the first one to go next to my back door. I have a tiny kitchen and needed some place to set my canisters. This fit the space available perfectly. It is well made and a pleasing color. It coordinates well with my hickory cabinets.
Be careful with this item. It is described as "4-Tier," but that is a lie. There are only three shelves.
These shelves are very solid and easy to put together. The color is nice too, a warm honey shade. A very good value for the money.
Answer: Hi, Sandra.  On my bookshelf purchased maybe a year ago has a vertical distance of twelve inches for all three shelves.  I hope this helps.Mike