From 1994 installed window..Hi,i'm having trouble with several breaking off at the top...approximately 7/8 width for the top...1 and 3/8 top to bottom height and approximately 5/8 across the bottom...7/8 from mid screw hole to the top....Thanks
Tom from SWISCO responded:
March 14, 2022
Hello! This top sash guide appears to match our 18-166. The dimensions are similar, too, but you should review all of ours just to make sure that everything aligns.