Rectangle Black Frame Clear Waterproof Cap for Rocker Switches, Black clear plastic waterproof cover for rocker switches that accept covers.
Please note the arrows on the first picture show a rocker switch that will accept a cover and has 4 cut-outs to allow the cover to clip on.
If the rocker switch does not have these the covers will not fit
The second rocker cover and switch are in the picture in an attempt to make clear the fixing of the cover, the price refers to one cover piece.
External dimensions 36x29 mm for switches with mounting hole 30x22 mm