Tel:   301-220-1144

Family Owned and Operated Since 1980

Marvin Fiberglass Windows

Essential Series

The Marvin Essential™ collection brings together design, quality, and performance in one streamlined offering. Strong, durable fiberglass exteriors and interiors are both striking and virtually maintenance-free. Simplified options make the order process straightforward, while clean lines and versatile styles make it easy to meet project demands.

Standard Features Include

  • Fiberglass windows closely resemble the look of painted wood — they don’t have a shiny appearance.
  • Made with Ultrex fiberglass. Temperatures may fluctuate but Ultrex Fiberglass won't. Ultrex expands and contracts at virtually the same rate as glass, so it works with glass rather than against it.
  • Ultrex is the first and only fiberglass finish to be verified to AAMA's 624 voluntary finish specifications for fiberglass.
  • Advanced Low-E Insulating Double-Pane Glass with Argon Features insulating glass with a Low-E coating that has two layers of thermal protection. Argon is inserted in the space between the insulating glass to make your home even more energy efficient.
  • Marvin's proprietary, mechanically bonded acrylic finish is up to three times thicker than painted finishes, and resistes UV degradation.

Double Hungs


The Essential™ Double Hung window, made of Ultrex® fiberglass, offers a classic look with simplified design. Top and bottom sash tilt for easy cleaning and streamlined options offer the right level of customization.

Two or Three Section Sliders


The Essential™ Glider window, made of Ultrex® fiberglass, offers a space-saving alternative when a swinging sash is not practical. Optimized for smooth horizontal movement with operable panels that tilt inward for easy cleaning.

One, Two or Three Section Casements

The Essential™ Casement window, made of Ultrex® fiberglass, is a side-hinged option built for smooth operation with a concealed multi-point locking system. It offers large sizing for ample daylight, clean sightlines, and design options.

Awning Windows

The Essential™ Awning window, made of Ultrex® fiberglass, is the perfect low-maintenance solution for increasing your home’s ventilation. Streamlined features and design options can be tailored to reflect home architecture and character.

Picture Windows


The Essential™ Picture/Direct Glaze window, made of Ultrex® fiberglass, is a stationary option where the glass meets the frame directly for a simple profile. It offers strength even at expansive sizes with a durable fiberglass exterior and interior.