The Window Man Replacement Windows

Essential by Marvin

Essential by Marvin

Design and performance, made easier

The Window Man carries The Essential Fiberglass collection from Marvin, bringing together design, quality, and performance in one streamlined offering. Strong, durable fiberglass exteriors and interiors are both striking and virtually maintenance-free.


Essential's narrow profiles and clean lines and versatile styles allow your windows to be both beautiful and sleek.  Allowing more natural light and expanded views, Ultrex Fiberglass windows are virtually maintenance free.

The Window Man Essential Windows, Sleek


The facts speak for themselves. Essential's proprietary fiberglass is 8X stronger than vinyl and 3X stronger than vinyl/wood composites. It resists fading, chalking, peeling and cracking.


  • Double-Hung
  • Glider
  • Casement
  • Awning
  • Picture
  • Round-Top
  • Specialty Shapes
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