I got a call for another 120V spa. This time, the recep will be located in a wet area instead of a damp area, so I need a bubble cover. Unfortunately, the unit has a GFCI cord end. Why is this? You have to have a GFCI recep anyway. I guess for the older homes that were built prior to GFCI outlets being required outside. However, it has a NEMA 5-20P end, so those older homes probably wouldn't have the 20A recep that would accept both a NEMA 5-15P and the NEMA 5-20P. Anyway, the cord end is about 4.75" tall from center of plug terminals, to the ottom of assembly. It is 2 3/8" wide, and 1 3/4" deep. I need a single gang bubble cover that hangs down at least two or three inches below the bottom of the bell box.
That's exactly what I did. Change the device to a single NEMA 5-20R and cut off the end of the cord and replace it. With the weight of the GFCI end of the cord pulling on the recepticle it will eventually fail anyway.