A home owner from Aliso Viejo, CA (Orange County) says:
November 27, 2018
I need to purchase at least one of the sash cap & guides as seem in the photos. This from my 1991 home with single hung block & tackle windows. This appears to be one piece solid aluminum. Hope you can help.
Casey from SWISCO responded:
November 28, 2018
Thanks for the photos. Your top sash guide appears to match our 18-010 aluminum guide. Look it over and let us know if you agree.