Replacement Sash Lift
I have no loose part, unfortunately and very few markings on window. A label at top of window appears to be from installer. Only relevant markings are:
3-4-75A
755 84W056-Thomson
Lift itself has no screws appears to have been designed to "click" into place. Apparently a design that did not work. Opening on sash for lift measure 3/8" by 2 and 5/8".
Photos attached.
Help please!
Bob
