Double Hung

  • Fully welded sash and frame corner joints for structural durability

  • 3-1/4" frame depth increases structural rigidity for a lifetime of performance

  • Sill dam is uniquely routed into the side stiles to create superior strength and weatherability

  • High-performance sloped sill guards against water infilitration 

  • Patented magnetic seal option further reduces chances of air or water migration

  • Unique engineering design allows for a continous interlock at the meeting rail

  • Heavy-duty, extruded aluminum screen frame available as full or 1/2 screen 

  • Patented intergral sill interlock design adds security and performance 

  • Integral interlocking sahses improve security

also available
  • Tilt-in sashes for convenient, ladder-free cleaning

  • Low-profile pocket head maximizes viewing area

  • Optional integrated lock/tilt system makes the sahses even easier to open, tilt in for cleaning, then close and lock beveled edges

  • Available with flat or domensional grids between the glass or simulated divided line

  • Unique design allows for flush frame with integral nail fin and buit-in J-channel

  • Triple fin-pile weather-stripping for improved seal and thermal efficiency

West Penn Windows - Altoona PA

We offer the best most efficient windows in the Altoona PA area! Fast & Affordable installation! Book Your Free Consultation

Designed for Your Life. Guaranteed.

The hassle of old windows goes further than scraping and painting time and time again. It is also the extra money that literally goes out your inferior windows with monthly power bills. Thermal Windows and Doors makes it easy to find the products that will save you money on energy, as well as time AND money on unnecessary maintenance. When it is time to replace your windows, Thermal has a broad selection to suit whatever your energy, design and maintenance needs may be.

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