Yes to short walls.. I pre-measured mine and they were one inch, with the opposite wall the shower. To that, I set the drill holes for the wood to not go through, and then screwed in the wood setting screws first, then wound them out and cut off the taper on the front and screwed them in again to the limit of the wall. I used a super heavy duty swing arm and ended up using my grinder to cut off the excess past the 100 by 100 format for the 22 inch TV so that it would not interfere with the cable plug ins.