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Insul-Tec | 500 Series

Double Hung DH500

The Insul-Tec combines excellent craftsmanship with a traditional look and feel. This series offers all the benefits you come to expect from vinyl windows with a variety of options to make your home energy efficient while enhancing its beauty. Since all OKNA products are custom-made, you can be sure of a perfect fit, which translates to savings on time and labor during installation.

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Slider SL520

The Insul-Tec combines excellent craftsmanship with a traditional look and feel. This Series offers all the benefits you come to expect from vinyl windows with a variety of options to make your home energy efficient while enhancing its beauty. Since all OKNA products are custom-made, you can be sure of a perfect fit, which translates to savings on time and labor during installation.

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