Superior Double-Pane High Performance Solar Low-E Plus

Nirvana Features:

  • Fusion-welded sashes and frame are built to be exceptionally strong and durable which help prevent air and water infiltration.

  • Exterior beveled mainframe with drip cap provides contemporary beauty and style.

  • Integral lift rail features comfortable ergonomic design and is significantly stronger and more durable than snap-in lift rails.

  • Intercept warm-edge spacer and sealant system is fully automated for condensation resistance and seal integrity.

  • Certa-Force balance system provides smooth and easy operation of double hung.

  • Heavy-duty vent lock allows the window to remain partially open for ventilation.

  • Metal reinforcement in the meeting rail ensures maximum structural performance and enhances the security of the window.

  • Comfort Foam in the frame is an excellent insulator that improves the window’s thermal effectiveness.

Product Detail

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Heavy-duty lock secures sashes and offers maximum weather protection.



Engineered sloped sill, featuring a double-wall sill dam, creates a super-strong bond between sill and jamb for maximum weather protection.


Low-profile tilt latches

On double hungs are easy to use and make cleaning a breeze.


Q-Lon compression gasket system

Adds barriers and diversions for exceptional water resistance. (photo above shows optional Comfort Foam®.)