Locations: Tulsa | OKC
(800) 259-7580
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Elevate your home’s comfort and style with Thermal Windows' Series 9900 Sliding Glass Doors, a luxurious blend of precision engineering, energy efficiency, and customized design. Crafted from maintenance-free, high-strength aluminum with a durable powder-coat finish, these doors feature a built-in thermal barrier to dramatically reduce heat transfer, keeping your space cozy in the winter and refreshingly cool in the summer. Offering flexible configurations (OX, XO, OXO, OXXO) and a spectrum of color and glazing options, from classic white and sandstone to designer shades like dark gray and brick red—our sliding glass doors are truly tailored for your vision. Proudly manufactured in Tulsa, Oklahoma, each unit is custom-made to your specifications, backed by Thermal Windows' lifetime warranty and direct manufacturer support. Seamless operation, enhanced security, and elegant aesthetics, all in one stunning door.
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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.
To match your home’s individuality, we offer a wide palette of powder coating and anodized finishes.
(Hover/Tap to see color names.)
Oklahoma Owned and Operated
Founded by Bob G. Pool in 1979, Thermal Windows has been custom manufacturing energy efficient windows and sliding glass doors in Tulsa, Oklahoma for over 40 years.
Custom Manufactured for You
None of our doors are mass-produced. We manufacture them in our Tulsa, Oklahoma production facility to your exact specifications. Custom sizes and colors such as bronze and black are our specialty.
Convenience
Thermal Windows sliding glass doors are maintenance-free, made from strong, precision-engineered aluminum, with a durable powder coat finish that never needs painting.
Security
Keyed locks and charlie bars are available options, along with ThermalSafe laminated glass.
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At Thermal Windows, we're proud of the quality of our products, installation and service. If a problem occurs that is covered by our warranty, you have the comfort of knowing that you will be dealing directly with us, the manufacturer who is familiar with you and your order, not a factory in a distant state. Since proper installation is a crucial part of window and door performance, our Lifetime Warranty only applies to products installed by Thermal Windows.
