It appears the two rollers on our 18-20 year old Milgard sliding vinyl window are in need of replacement. Thanks for your assistance, Ed
Paul from SWISCO responded:
April 5, 2019
Thank you for sharing your photos with us, Ed. We offer a newer style Milgard sliding window roller. Take a look at our 87-201. Look over our measurements to see if they should match up with your piece.