Andersen Upper And Lower Lock
- Works with 400 Series Gliding Windows manufactured from 1991 to Present.
- Used as upper and lower lock for G36 (3'6" high), G4 (4' high) and G5 (5' high) units.
- Used as upper lock for G3 (3' high) unit.
- G2 (2') high) unit does not use this lock.
- You must remove sash to change this lock.