Marvin Essential Collection Windows

Design and performance, made easier

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.

Proven strength

The facts speak for themselves. Our proprietary fiberglass is eight-times stronger than vinyl and three times stronger than vinyl/wood composites. It resists fading, chalking, peeling and cracking.

Powerful durability

Marvin is the leader in fiberglass, which outlasts vinyl windows by 38%. Our pultruded fiberglass remains stable in extreme temperatures and expands at nearly the same rate as glass, so Essential windows stay strong and true, even in harsh conditions.

Streamlined details

With narrow profiles, clean lines and simpler features and options, Essential makes it easier to choose and order.

Request a Quote for Your Home

At United Windows & Siding, you work directly with the owner eliminating the salesman’s high commission.

Contact United Windows & Siding, and we will visit your home to provide a customized quote on the windows you choose.

100% Lifetime Warranty

Our products are backed by our true 100% lifetime warranty* with no trip fee and no labor fee! An investment in new windows or siding from United Windows & Siding will increase the value of your home, because our warranty transfers to the new homeowners when you sell.

COLORADO

We provide service in the Colorado cities of Denver, Arvada, Golden, Centennial, Highlands Ranch, Parker, Castlerock, Littleton, Aurora, Wheat Ridge, Colorado Springs, and surrounding areas.

IOWA

Our Iowa office provides windows and siding installation services to the cities of Cedar Rapids, Marion, Coralville, Iowa City, Waterloo, Muscatine, Cedar Falls, Grinnell, Dubuque, and surrounding areas.