Both Crestline double hung and casement windows -- all aluminum clad
Found a number on one of the double-hung: 120193Y27B3M (hard to read)
Could not find any on a casement -- these get more sun and I'm guessing the ink degrades over time.
Looking to replace the gasket parts to help seal things better in the winter. 2-3 neighbors looking to do theirs too.
Can you identify the materials.
