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Sliding Glass Windows

For bold and beautiful views, Thermal King Sliding Glass Windows offer an unmatched level of quality, strength, and longevity. Elegance and security perfectly blended to give you, and your home, the window you deserve. 

Let us show you the perfect window.

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Energy efficiency is first and foremost when choosing a replacement window. Thermal King Windows have an exclusive Triple Insulated EGIII KR IS Glass System.  It has multiple layers of Low-E glass with two insulated chambers filled with Krypton Gas.  Combined with our patented foam Super Spacer makes Thermal King Windows 250% better and even 93 Percent more efficient that most other windows in the Nation! 

Thermal King windows are built with maximum strength and security.  Our frames and sashes are fusion-welded and guaranteed to never warp, sag or bow.  The fiberglass-reinforced sash rails also provide unsurpassed strength and durability.  All windows over 26 inches have two flush-mounted sash cam locks for added safety.  Our interior glazing bead deters glass removal from outside the home which provides maximum security and a waterproof seal that protects the insulated glass.  By adding ventilation limit locks you have the peace of mind to know your windows are secure even when partially open.

Have Questions?

We are always available by phone or online to answer any questions you might have. 

All Thermal King Windows are designed to be maintenance free. Our sashes are removable from the inside to allow easy cleaning. Our uiPVC, both inside and out, never requires caulking or painting and is virtually maintenance free. We know that regular cleaning is important so we offer screens that can be removed from inside the home and Easy-Clean™ glass that needs cleaning half as often and with half the effort of ordinary glass. Our frames and sashes are fusion-welded for maximum strength, guaranteed to never work loose or separate. And all of our insulated glass carries a lifetime transferable glass breakage warranty.

Energy Star Windows and Doors

Not just some, but ALL of our products are Energy Star qualified. The Energy Star Program was created by the U.S. Department of Energy and the U.S. EPA to make it easier for consumers to choose the most energy efficient products. This label certifies our products meet or exceed the federal energy efficiency standard. 

Let’s Build Something Together

Our simple and hassle free process guarantees that your home improvement project will give you stunning results, guaranteed. 

No Obligation, Free Estimate

Our team is ready to help you and is specifically trained to help provide solutions, not sales gimmicks. You can schedule with us online or over the phone and our team will provide you with a totally free estimate. 

High Quality, Energy Efficient, Perfection

Once we have the specifications for your windows our project engineers will begin crafting our patented, industry leading, triple pane windows just for your home. We follow the same process for our beautiful exterior doors. 

Window, Door, and Siding Installation. With a smile.

Our installation technicians are expert craftsmen. But, they are also highly trained customer service professionals. We pride ourselves on the ability to complete your project on time and with friendly staff who ensure you have a positive experience. 

Perfection Guaranteed

We don’t just sell great windows, doors, and siding, we guarantee it. Our windows will never stick, rot, warp, fade, or fail. In fact, if they do, we will come out and replace it, no questions asked, period. We pride ourselves on quality and virtually maintenance free products for our valued customers. 

Warranty

Thermal King Windows are backed by our industry-leading Limited lifetime warranty.

Contact Us

Located in Lenexa, Kansas and serving the Greater Kansas City Metro and Surrounding Area.

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Office Location

Lenexa, Kansas

Open Hours

M-T: 8am - 7pm | F: 8am - 4pm