This transformer is to be connected to some LED strip lights which will be controlled by a Lutron digital timer in a one gang (old construction) box in the wall and I'd like to install it just below the timer. I was at HD and their single gang OC electrical boxes aren't deep enough to hold the transformer (I need about 3 3/4") and they don't sell any double or triple boxes for OC. It seems like 99% of all the electrical boxes they sell are for new construction.