Wiring device covers

A snap-on cover for an electrical wiring device having a plate associated therewith comprising:

• a substantially rectangular hollow member of a pliable material and comprising a substantially planar rectangular member and a rectangular wall member surrounding the perimeter of and extending substantially perpendicularly to said planar rectangular member;
• and
• first and second plate engaging means attached respectively to opposed sides of said rectangular wall member and comprising:
• first and second projections extending respectively from the edge of respective ones of said opposed sides of said wall and in the plane thereof;
• said first one of said projections comprising a first length and said second one of said projections comprising a second length different from said first length to a degree as to facilitate and ensure proper orientation of said cover to the plate having notches corresponding in lengths to said projections;
• and
• first and second detents connected to respective ones of said first and second projections and extending substantially perpendicularly thereto.