The screws are much too small and weak to hold up this unit.  In fact while trying to install the unit one of them broke off.  Also the unit could not be attached to studs because it is 15 instead of 16" on center.  So we had to just use angle brackets to attach it to the wall one side.  It doesn't look as finished that way as I would like but it will be fine for now.  I may try to paint the brackets so they don't show as much.  Because it is made of particle board and not wood it is quite heavy and took two people to install.  I wouldn't recommend this product until they beef up the attachment kit.