center of screw holes

A quick learner from FL says:
what is the center of the screw holes
Profile picture of Bob
Bob from SWISCO responded:

Hello there. The center of the screw hole is literally the center of the mounting hole. We ask you to measure from the center of the mounting hole when measuring hole spacing, rather than the sides of the hole. Let me know if you have further questions. 

How to install a Window Opening Control Device (WOCD) kit
How to install a Window Opening Control Device (WOCD) kit
VIDEO
WATCH >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.