I recently moved into a new place/condo 5th floor, the windows are original form the 80's so they need these guides to go up and down and to be able to stay in place and not wobble. Not all my windows have them on, it takes 4 per window. I thought maybe item # 87-091 or 67-009 would work but I'm not the expert here. I would need about 30 pieces.
Casey from SWISCO responded:
April 16, 2021
Hello,
I think that our 67-009 would be the better substitute for your top nylon guide. Take a look at the specifications and see if you agree. Thanks for posting!