I have been looking for this part and can't find a match. I found one very similar in black, but nothing in white. Holes are 2-5/16" apart, overall length is 3-1/2"
Tom from SWISCO responded:
September 26, 2018
This looks similar to our 26-188W. I would just see see if the hole-center to edge measurement matches up (7/8" on our 26-188W).