Our High-Performance Window System:

  • Heavy-gauge multi-chambered frame for strength and durability.
  • LoE3 266 double-pane glass and argon gas.
  • 12-point fusion-welded virgin vinyl (uPVC) sash and frame.
  • Strongest structural performance available, backed by independent fenestration industry testing.
  • Exceeds the highest standards in energy-efficiency performance levels.
  • Designed for everyday use, in all climates.
  • Built-in SuperScreen blocks the sun’s harmful UV rays to protect your carpet and furnishings from fading.
  • Virtually maintenance free – our pure uPVC vinyl never requires painting.
  • Easy operation for opening, closing and cleaning.
  • Superior warm-edge ratings for comfort and performance.
  • Exceeds testing standards for condensation resistance and water infiltration.
  • Unique European-style design with stepped and beveled frame.



Whichever style you choose, you’ll enjoy our elegant European design with clean lines for enviable curb appeal.




Choose from over 19 colors to complement your home’s exterior! Grid patterns also available.




Energy Efficiency. Our high-performance vinyl (UPVC) replacement windows are energy-efficient to reduce wasted energy. That protects the environment and saves you money.

Comfort. And, your home stays cooler in the summer, and warmer in the winter, for year-round comfort.

Light. At the same time, bathe your home in cheerful bright light.



The Doers Difference. Most windows take an Insulated Glass (IG) unit and build a sash around it. We incorporate the IG unit, with the spacer, and directly glaze the lites of glass to both sides of the sash.

This greatly enhances structural and thermal performance - a true industry breakthrough! You get the strongest and best performing window in America!



40 Years of Experience - Nexis Windows by Doers
Headquartered in Tampa, Florida, we bring you decades of replacement window manufacturing, sales and installation experience. We’re committed to the highest quality products, continuous ingenuity, and exceptional customer service.

Peace of Mind - Our Lifetime Transferable Warranty
We warranty our products against defects or improper installation, and will even protect the next owner of the home for up to an entire year.



Free No-Obligation Home Shopping Service

  • We provide complete education on our products and how to choose the right product for you
  • We measure for the most accurate fit

Quick and Professional Installation

  • Fully licensed and insured installation Certified installers, trained by the manufacturer


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