Possible Season All Storm Window

The framework between the glass panes is repeatedly stamped "SAI" and "88".

The latches that release the pane are marked "Tilt Safe (Pat. Pending)"

Is this a Season All window?

Hi,

Thanks for responding. I think I wasn't clear. This is a manufacturer ID question right now. If the stampings between the panes isn't sufficient, where did Season All normally mark their information, assuming this is a Season All window?

A more pressing issue is how to get the sashes out of the frame.

Another web site says tilt the sash inward then tilt up and pull the "sash pin" from the "clutch", the assembly enclosed in the channels in the frame.

I've attached images of what I think is the sash pin, which is held in place by a set screw.

Tilt the window in, remove the set screw and lever out the sash pin?

Worried about breaking the window.

Thanks.

Thanks a lot for the video. The window is a little stiff but I was able to get it out and take photos and detail measurements.

The project is to replace the interior pane on the upper sash. Since the "SAI" stamping between the panes was not enough to ID the manufacturer purchasing a replacement sash is off the table.

What parts do I need to repair?

Thanks

Tom,

Thanks for the quick reply. Sorry not to get back to you sooner.

What I was trying to determine is if this type of window can be disassembled for pane replacement without having to purchase replacement parts like seals.

One parts issue that may have come up from removing the sash was the condition of the spiral balances, which were covered with thick grease coatings. Is this normal?