Basement Hopper

OKNA basement hopper windows are also some of the most air-tight windows in the market today. The highest energy efficiency combined with the lowest infiltration rate of OKNA basement hopper windows will help you save on energy bills and increase comfort in your home year round. The big box stores usually stock the limited number of standard basement window sizes that may not fit your basement window opening.
Although window opening can be adjusted by using wood boards, the result doesn’t look well and decreases the glass area. Since OKNA basement hopper windows are custom-made to the nearest 1/8 of an inch, you can be sure of a perfect fit and better final appearance of your basement window project.
 

OKNA Basement Hopper Window Features and Benefits

• Maintenance free rigid multi-chamber vinyl profile.
• Fusion welded beveled frame & sash for superior strength and durability.
• HeatSeal spacer and glass system for drastic reduction in the possibility of condensation on the inside of the window.
• Opens 90 degrees in regards to the mainframe for excellent air circulation, much needed in damp basements.
• Fiberglass mesh full screens standard on all OKNA basement hopper windows.
• Full integral interlock with double weather-stripping.

Optional foam-filled insulated extrusions add energy efficiency

Full 3¼” Depth Welded Mainframe that features beveled exterior curves that not only have a modern day look, but also allow for maximum weld surface resulting in superior strength and years of long lasting performance.