All 7700 windows contribute to reducing energy costs by utilizing low-E glass and Argon gas within the insulating glass unit.

Low-E glass functions to retain heated air inside during colder months and keep air-conditioned air inside during warmer months. Argon gas, a non-toxic gas heavier than air, boosts insulating values and enhances efficiency by replacing the air inside the insulating glass unit.


7700 Series Double Hung

Standard Features

  • Product for remodeling applications.
  • Beveled frame design replicates the traditional look of wood.
  • Frames and sash are welded at mitered corners for strength and resilience.
  • Frame profiles are chambered for additional strength and thermal performance.
  • Double-strength glass units with Low E / Argon-filled gas.
  • U-channel spacer design is more efficient than box spacers.
  • Interlocking design of the meeting rail secures sash tightly together around weatherstripping to help prevent drafts.
  • Sill has a sloped design to prevent water from pooling in heavy rains.
  • Closed-cell foam sill bulb protects against air and water infiltration at the sill.
  • Easy-to-move sash remains in any open position because of a durable, constant force coil spring balance system.
  • Both top and bottom sash tilt in for easy cleaning from inside the home.
  • Dual pop-out vent latches allow the sash to partially open for ventilation.


Blinds-between-the-Glass are now available on Select 7700 Series Windows

  • No exposed cords makes the blinds safer for children and pets, and they never need cleaning.
  • Color coordinated components.
  • Single and Double Low E options available.
  • Contemporary, single fingertip controller to raise, lower and tilt.
  • White – Tan – Clay – Silver Moon – Espresso – Slate Gray