Bob from SWISCO responded:
January 12, 2021
For channel balances, length is determined by measuring the metal channel; the attachments or nylon fittings on each end are not included in that measurement. If the metal channel is an even 23" long, see our S380-23. Look for a stamp code on the metal channel to confirm what stamp option to select; show a picture of this stamp to me if you're uncertain. For the Top Sash Guide, see if our 18-180 matches up. |