Mikrotik seems to ignore this area with their ready to made products (and personally I do not ting the 750 series boxes so nice I want them hanging on walls).
WHat is the recommended hardware for a smaller office that needs 3-6 dual band access points? Anyone knows of any MIkrotik reseller that presells ready installed hardware?
Strongly preferred would be POE capabilities as it means one cable less going up the walls 
rb951g-2hnd is good for this
http://routerboard.com/RB951G-2HnD
RB951 can not do dual-band.
I would recommend the RB912UAG-2HPnD or BaseBox2 and add a R11e-5HnD card for 5GHz.
Later you can change this card for an AC card.
Gets a lot more sensible when you dump the “hey, I am an as ugly as hell looking box for outdoor mounting that is just here at the wall of your nice office” and replace that with an RF Elements StationBox. Anyone experience with this?
http://www.rfelements.com/en/products/enclosures/stationbox-inspot/
That looks quite nice - as in: it looks like something that does integrate with an office visually.