In general I like this product line of shelves. I had previously installed a couple of the 2 x 8 shelf units and then decided to add a 2 x 4 unit inline with one of the 2 x 8’s. I was disappointed to find that on the 2 x 4 unit the front rail has 1/2” holes all the way across it.So all around my garage I have this nice solid white rail line until this 4’ piece that is full of holes- it makes no sense at all.