Casey from SWISCO responded:
October 3, 2022
Hello, Take a look and compare the dimensions of the EntryGard and Caradco operators that we've related for you to the assembly in your photos. The key difference between the two is the length of the shorter link arm. Note that both operator pairs are compatible with the 39-107FK handle and cover kit. Thanks for posting! Dimensions for 39-031
Dimensions for 39-155
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