HD GFCI mounting horizontally?

[NoCornOrRice]

My e-brew setup has used that $50 spa panel from Home Depot for a number of brewdays with no issues. I had it mounted vertically, but the the newly renovated brewstand would work best with a horizontal installation, any issues with that? The planned location is safe from water

 

[tektonjp]

Shouldn't be a problem, just be sure to mark on/off clearly.