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Thermal Windows, Inc, Windows, Tulsa, OK
Tulsa World Best in the World medallion
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Series 500 Single Hung Windows


Series 500 single hung windows are a great choice for traditional styling and high performance in a lower-priced window. They include most of the features found in our popular double hung windows, and the fixed upper lite can be curved to form elegant archtops.

Series 500 windows are versatile. They can be connected (mulled) together with other windows to form twins, triples, bays, bows and stacks. The configurations are virtually unlimited!



At the heart of each Series 500 Single Hung Window is our polymer thermal barrier. This special barrier separates the interior and exterior of the window throughout the entire frame and sash, dramatically reducing heat loss in the winter and heat gain in the summer.



Series 500 Standard Features

  • Sealed 7/8in. insulated glass for optimum thermal efficiency
  • Center cam lock plus a hidden metal security lock on lower sash
  • Carbon steel spiral sash balances
  • Lower sash easily and conveniently tilts inward for cleaning
  • Half-length removable insect screens
  • Screen mesh in your choice of wire or fiberglass
  • Double high-density pile weatherstripping with mylar fins to seal out wind and water
  • Lifetime Limited Warranty when we install in your primary residence

Color Options

Our Thermal Barrier aluminum windows and sliding glass doors feature a durable, maintenance-free powder coat finish in your choice of five Standard colors (below, left). Custom colors and anodized finishes (below, right) are available for an additional charge*.


*Colors shown are for general information only. It cannot be assured that actual finishes will match these examples.