I previously bought a Zomo shelf (the big one .. 400 I think) and by chance I came across the "divider". it can be used to repurpose your shelf and not only store records but also CDs. Great thing. Assembling the pair of boards is of course done in no time and the expansion is very easy: just push the thing in. However, I find the price a bit too high. but it is a perfect fit and I don't have to buy another shelf for a few CDs. therefore I am ultimately quite satisfied with the product and can recommend it!