Performance and Durability in an Elegant Design
Powered by Kensington GlassAvailable in a wide variety of styles, Kensington HPP windows enhance the beauty of your home and are virtually maintenance-free.

The Williamsport vinyl window series,Powered By KensingtonGlass™ will improve the energy efficiency of your home while adding beauty with its classic architectural appeal. These beautiful windows not only give you the indoor comfort you desire but can help reduce your heating and cooling use.

WilliamsportEvery Kensington HPP window is crafted using finest fusion welded extruded vinyl frames, making them stronger and more durable than traditional aluminum windows, without the high cost of maintenance required by wood. Quality construction is what homeowners come to expect from Kensington HPP, and all of our windows meet those standards.

No matter where home may be, The Williamsport’s high performance and designer option will fit right in with your homes style and decor!


  • KensingtonGlass with triple glazing technology to boost thermal performance* for Increased indoor comfort – warmer in the winter and cooler in the summer
  • Industry Leading Whole Window R Values as high as 4.8 in the DH and 5.3 in the PW.
  • UV protection reduces damage and fading to floor, fine art, and furniture
  • Helps to increase the energy efficiency of your home
  • Reduced condensation
  • Curb appeal for your home
  • Limited lifetime warranty
*Based on KensingtonGlass option selected