Product Details
Andersen Balance Cavity Plug
- Works with 400 Series (TWII) Tilt-Wash Double Hung Windows manufactured from 1996 to Present.
- There are four plugs on each unit, one on each side of the bottom sash and one on each side of the top sash.
- They are installed in the gap between the jamb liner and the sill (Bottom Sash) and in the gap between the jamb liner and the head jamb (Top Sash)