One Lite Reverse
A heavy extruded aluminum one-lite storm window with a single full-height opening that takes either a glass insert or a screen insert. The inserts are heavy-duty extruded frames and come out from the outside, so nothing has to be done from inside the room.
Glass: 1/8″ or 3/16″, with tempered, Low-E or obscured options. Sill expander available.

