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For superior strength you can't go wrong with Birkshire's fusion-welded frame and sash design. It is exceptionally slim and refined so your home will shine in a whole new light-inside and out. Superior strength is fusion-welded into every Birkshire window.

  BEVELED EXTERIOR MASTER FRAME for a slim line, clean and elegant look.
  MULTIPLE INSULATING AIR CHAMBERS help to reduce conduction and increase energy efficiency.
  FULLY EXTRUDED LIFT RAIL for strength and durability.
  MEETING RAIL INTERLOCK gives protection from the weather as well as added security.
  METAL REINFORCEMENT for added strength at the meeting rails.
  SLOPED SILL forces water to drain to the exterior.
  DOUBLE BARRIER-FIN WEATHERSTRIPPING around sashes and frame helps to protect against the elements.
  INSULATED GLASS UNIT with PPG INTERCEPT™ WARM EDGE SPACER SYSTEM improves the window's year-round performance.
  HIDDEN SCREEN TRACK for added beauty.
  • FUSION-WELDED SASH AND MASTER FRAME for added strength.
  • TILT-IN SASHES for ease of cleaning.
  • FULL BALANCE covers help protect against air infiltration and add a finished look to the window interior.
  • CONSTANT FORCE BALANCES eliminate sash cords, weights and pulleys, and make opening and closing the window easier.
  • Protective HOLLOW BULB SEAL at the sill acts as a secondary weatherstripping.
  • COLOR-COORDINATED TILT LATCHES, LOCK AND KEEPER for a clean, consistent appearance.
  • Color-coordinated DUAL VENT LOCKS limit the movement of the sashes from the interior and exterior while allowing for ventilation.
OPTIONS AVAILABLE:
  • ENERGY STAR® compliant BarrierXP: Insulated Glass Package combines PPG Solarban 60 glass with Argon Gas and a High Performance PPG Intercept™ Warm Edge Spacer System for added thermal efficiency.
  • Obscure (frosted) glass.
  • Choose from standard, contour or brass grids.
  • Colonial or diamond grids, as well as specialty grooved glass patterns.
  • All models available in white or beige.


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