Replacement cartridge for PGT window

This part is called a channel balance. Yours in particular has a very peculiar stamp, though. I've never seen anything like that before.

I'll need more photos before we can proceed. To start, can you show me the top and bottom nylon fitting? Please make sure that these components are whole and undamaged.

Can you also show me the metal clip at the end of the cord?

If your window is PGT, then there's a good chance you have the Series 395 channel balance. based on your stamp and length that would be the S395-37, which is 37" long. This has a 19-005 top and 15-001 bottom, which are different than the fittings you show here.

To be honest, you really should check those fittings; if not on this window, then in an identical window in the house. PGT windows very commonly used our Series 395 but that's by no means a guarantee. At the end of the day, the only way to know for sure is to check the original. Anything less than that is a guess.

As for stamp, yours is very unique but I believe it's a match for our 3665 option. Two balances with this stamp can hold a sash weight of 39 through 42 pounds. I recommend that you weigh your sash on a scale to confirm.