1. Offset design built into main frame provides extra clearance from primary window and creates additional dead air space for more insulation.
2. Vinyl thermal-break around perimeter flange reduces heat and cold conduction through frame.
3. Wrap around "marine glazing" creates a barrier against air infiltration and cushions the glass.
4. Main frame with mitred and sealed corners is fastened with two screws on each corner for structural stability.
5. High-density pile weather stripping with Mylar fin on the full perimeter of the main frame.
6. Spring-loaded metal sash lacks ensure a positive lock.
7. Full screen is available with PHIFER SUNSCREEN (on Three Track Supreme Series) to reduce up to 70% of the sun's heat before it hits the window.
8. Glass options available are green, bronze, grey tint and Low E.
9. Nylon corner-keys and tilt pins on sash insert corners reduce wear of window and assure quiet, effortless operation.
10. Hollow tubular frame provides extra strength and resists twisting of main window frame (Supreme Series.)

We also offer a less expensive two track version of the storm window pictured, which also includes a fiberglass half screen. The half screen is fitted onto the outside track in a separate sash for easy removal toward the inside.

Our most economical window, the two track, solid frame storm window offers many of the same features of our more expensife models at a great price. It's perfect for insulating and protecting those primary windows in your house that waste energy and boost your heating and cooling bills.