It's simply more visually appealing when mounted vertically. I think it would take general consensus that horizontally was better for the vendors to start considering it. Of course, It could just take 1 very well established/respected vendor to get the ball rolling.
I mount my personal frags that i plan on growing out horizontally and the ones I sell locally vertically.
I mount my personal frags that i plan on growing out horizontally and the ones I sell locally vertically.
