Related Clues:
- Window filler
- Typically rectangular glass piece
- Clear plate
- Something held in a sash
- Glass in a sash
- Part of a French door
- Window square
- Philatelic sheets
- Subject of a frame job?
- Glazier's installation
- French door sections
- Greenhouse part
- It provides for transparency
- See-through squares
- Plate in a sash