Paul from SWISCO responded:
September 27, 2016
Thanks for posting! Based on your information, it sounds like you have a cottage window. What this means is that the upper sash is smaller than the bottom sash, which also means that the balances that support each will be different.
Either way, based on the stamp you gave, 12#26, I recommend our 24-L8-1227. This is for the left side. For the right side, see our 24-R12-827. Keep in mind that Andersen considered left and right by looking in from the outside. |