Bob from SWISCO responded:
June 25, 2023
Thanks for posting. Sorry, but I am afraid the 38-173 only comes with 1-1/2" hole spacing. Note that hole spacing is measured center-to-center; this appears to be how you're measuring it as well, but sometimes photos can be deceiving, so please confirm. Also see the 38-154, which has a higher profile and a hole spacing of 1-1/4". See the dimensions below. Would this be a closer match? Alternate view
Alternate image for 38-154
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