- Size 20310 tilt-wash upper sash with grille grommets.
- For units manufactured prior to May 2010 with interior removable grilles using plunger style fastener - see image.
- Sandtone exterior with a patented Flexacron® finish and an unfinished pine interior.
- Low-E sun 3 glass.
- Visible glass dimensions are 19" wide by 19 15/16" high.
Flexacron is a trademark of PPG Industries, Inc.