Below is a link to one that is available in different widths and is frameless and recessed. Were you wanting/needing surface mount or recessed, or does it matter? Might Something like this add some additional storage when mounted to the inside of a vanity door, if you have a vanity with doors? They can be found various places in various sizes. They would also maybe have to be lined with something to keep smaller items from falling through...ie fabric, contact paper, etc. Sue Here is a link that might be useful: KOHLER K-CB-CLC3526FS 35-by-26-by-5-Inch Double Door Aluminum Cabinet

We have three frameless, recessed Robern med cabs, and are very happy with all three. We have 3 1/2-4" deep models in the guest bathroom and hall bathroom, and a 6" deep model in the MB. Our bathrooms are small as well (MB is the smallest, go figure!), so storage space was a concern for us as well. I love my 6" med cab--can fit a lot in there! Ours all have flat mirrors, because that was our preference. I think you would be fine with whichever one you choose--I don't think there is a hard and fast rule which type of mirror you can use with a traditional or contemporary or ultra modern bathroom. I've seen bathrooms of all types using a wide range of med cab styles and none ever looked out-of-place to me.

This is one below would match very well the style of the vanity, but U$ 380 is a lot: Medicine Cabinets:Cherry Medicine Cabinet - Handmade Woodworks Would it look weird if I just put a frameless recessed mirror cabinet there? I mean because the 2 main mirrors have a white shaker frame, the recessed cabinet would be frameless. If you think it's fine, I could get a Robern one, like this: Robern What size should it be considering the vanity mirrors are 24x36"including the frame? I could maybe go with a semi recessed shaker style with mirror like these: Shutter Medicine Cabinet : Medicine Cabinets : Restoration Hardware Cartwright Medicine Cabinet : Cartwright : Restoration Hardware But might need to refinish to match whites of cabinets. What do you guys think? Ideas? Thanks

I am looking at the same RH cartwright as well. I would definately do the small for a 36" vanity. I'm doing a small for my son's bath and his vanity is 48". Part of it depends on how you will do your lights- scones to the side of the cabinet or fixture above. We are starting framing next week. The joists and subfloor on the first floor are in. FYI, RH will have a bath sale shortly after christmas and I plan to purchase the cabinets then. I'm trying to decide which size to do in the master. We have 2 vanites and each will be about 54-57". The big one sounds enormous, or maybe it feels wrong for that style of cabinet. Any opinions? Here is a link that might be useful: RH cartwright medicine cabinet