Specialty shape windows add style and dimension to your home's curb appeal. Choose from a wide array of shapes to complete your window remodeling project.
The simple design behind this series hits the mark on style, safety, energy efficiency, and performance.
Whether you choose a fixed or operable window you can count on your Signature Series specialty shape window to last. The fusion welded sash and frame meet the strictest guidelines for structural needs.
EnviroSeal nXt outperforms other single-seal and dual-seal spacers. Windows built with EnviroSeal nXt exhibit the lowest failure rates in the industry which is ideal with insulated glass units. Considered the glass spacer of the future, this warm-edge glass spacer is highly energy efficient.
Designed without metal, the spacer conducts less thermal energy thus improving the edge of glass temperature by as much as 16.6° F when compared to other spacer systems. By regulating the thermal transfer, windows with EnviroSeal nXt technology will keep your home comfortable year round.
Cardinal LoÉ3-366 offers the ultimate experience in window performance glass. This glass delivers the perfect balance of solar heat control and high visibility. It also provides peak levels of year-round comfort and energy savings, making it the perfect glass regardless of which part of the country you live. With three layers of silver on the glass, you are certain to enjoy year-round thermal protection all day, every day.
Installing ENERGY STAR® qualified windows lowers energy bills and saves you money over single-pane and even new double-paned, clear-glass windows. Windows with our high-performance glass package are ENERGY STAR® qualified for all regions.

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Below are some of the questions we get the most. If you can't find your question, please reach out and ask your question today.
Yes, Brennan Enterprises offers free, no-pressure estimates to homeowners and pros.
We do not repair existing doors or windows. If you would like a free estimate for replacement windows or doors, please give us a call.
If you are an existing client and are having an issue with a product we’ve ordered and installed please contact our service department for assistance.
LEARN MORE: Dealing with Sticking Windows and Doors.
Absolutely. Our experienced team takes every precaution to safeguard your home, including careful preparation and thorough cleanup after the job is done. Additionally our team is fully insured—$2M general liability.
Yes! If you’re envisioning a new focal point for your space, our team can safely and professionally create new openings that align with your design and structural needs
Wondering if we serve your area? We proudly offer window and door replacement services across Texas, including:
Since our founding in 1979, we've offered window and door replacement services to homeowners in the Dallas-Fort Worth Metroplex.
Our headquarters is located in the Entertainment District of Arlington, Texas. Feel free to drop in during business hours to get a feel of our products in person.
Brennan Enterprises proudly serves homeowners in the Greater Houston area, delivering trusted window and door solutions backed by expert installation.
Ready to experience the difference of working with Texas’s leading window and door replacement company? Book your free consultation today and let’s create something amazing together!