The OKNA 500 Series is our most popular choice for window replacement. The 500 Series 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.

    1. Double Hung

      A window consisting of two sashes operating in a master frame where both the upper and lower halves slide vertically past each other and both tilt in for cleaning.
    1. Picture Window

      A fixed window which does not open for ventilation.
    1. Sliding Window

      A window consisting of two or more sashes which operate by sliding horizontally past each other.
    1. Hopper Window

      A window where the sash is hinged at the bottom and pulls inward for opening.
5601 Beaver Dam Road Bristol, PA 19007 Tel.: 215-788-7000 Fax. 215-781-1166
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