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Fiberglass Windows

Marvin Essential® Casement Window

The Marvin Essential® Casement window features a side-hinged design crafted from durable Ultrex® fiberglass, combining effortless operation with a discreet multi-point locking mechanism. Available in larger sizes to welcome more natural light, it pairs expansive views with sleek sightlines and versatile styling options to suit your home.

DESCRIPTION

Exceptional Strength

Constructed from Ultrex® fiberglass, these windows provide lasting durability and greater strength than vinyl and wood/vinyl composite alternatives.

Durable, High-Quality Finish

The acrylic finish is three times thicker than competing painted finishes and helps protect against scratches, chips, peeling, chalking, and fading, even in darker shades.

Energy-Efficient Performance

Ultrex® fiberglass offers low thermal conductivity to help reduce heat transfer. Paired with energy-efficient glazing, including dual and triple pane glass options, it supports year-round indoor comfort.

gorgeous window with modern frames