Thank god for you guys! The 1st 2 pics (10854 and 102833) are of a window that were installed by a handyman. There are no markings. It looks like there is a string that acts as the pulley system.
The next 2 (102622 and 102557) were installed by Window World. Again, no markings but they are metal and seem to have a flat metal pulley to help it go up and down.
Any help you can give me, would be great! I am a quick learner and rather handy.
Thank you
Scott