A quick learner from USA says:
May 15, 2014
Looking for security stop like model 26-275, except it's 1 1/2" screw hole to screw hole. This is on a Traco vinyl sliding window. Thanks
Tom from SWISCO responded:
May 16, 2014
I'm afraid we could not find a version of this part with 1-1/2" screw hole spacing. Can we see pictures of your part? That will help us find a good replacement.