Any size, although the larger the better. So, if you have your Neuance shelf just sitting in your closet for the last few years because you didn't know what to do with it, now is your chance to sell it to me. I'm not picky about appearances so if it has a scratch or a nick, no need to worry, there's a good chance I'll still be interested. Send me a PM if you have a Neuance shelf you'd like to unload. Thanks