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Jasmine from SWISCO responded:
January 18, 2024
Hey there, Thanks for reaching out! I am confident we can supply you with a replacement for your existing Alumax sweep lock but I'll need a bit more information to determine the correct one. To start, I'll need to know the measurements for the distance between the installation holes (center to center) and the the backset (center of hole to the back of the sweep lock). Take a look at the diagram below for reference. 
Dimensions for 90-180
In regard to the catch on each side of the window, I believe you may be referring to the window vent latch. To determine the right replacement, I'll need to see a clear photo of the part. Unfortunately, its a bit difficult to identify the exact replacement from the photo provided. The issue with the upper sash sounds like it could be attributed to missing or damaged balances. This is what is typically used to support the sash weight and prevent it from slamming down. If the balances are still in the window channel, I'll need to see one or both of them removed to identify the correct replacement. However, if the balances are missing, I'll need to see a balance from a similar window in the home. There will also be a few other details I'll need but I can only determine what they would be once we identify the balances you need. Please feel free to reach out with any questions you have in the meantime. |
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Jasmine from SWISCO responded:
February 5, 2024
The vent latch you have here looks a lot like the 26-122 Vent Latch. Carefully compare the dimensions to confirm that this is the right fit. 
Alternate image for 26-122
Side view of 26-122
Diagram of 26-122
The balances you have in the window are a tilt window spiral balance. To identify exact balances you have, there will be a few details you'll need to gather. The video below gives an explanation on the information you'll need. |
