
Infinity® Casement Windows for Colorado Homes
Want wider views, smooth operation, and serious energy savings? Infinity® casement windows deliver all three. Built with Ultrex® fiberglass, they stand up to Colorado’s intense sun, hail, and freeze-thaw cycles while keeping a tight, efficient seal season after season.
Gravina’s Window Center of Littleton® has installed casement windows across the Denver metro since 1973. As Colorado’s original Infinity dealer, we match product to home, climate, and budget, then install it the right way.
Why Choose Casement Windows?
- Big, uninterrupted views: slim profiles put glass (not frame) in the spotlight.
- Easy ventilation: side-hinged sash funnels fresh air in on demand.
- Airtight when closed: multi-point locks help cut drafts and energy waste.
- Low maintenance: fiberglass doesn’t warp, swell, or fade like bargain vinyl.
Result: a comfortable, quiet home and utility bills that won’t go up and down with the weather.
Infinity Casement Features You’ll Feel Every Day
Sleek, modern profile
Narrow frames create larger sightlines and more natural light.
Smooth operation
Crank open with a folding handle that tucks away for a clean look.
Easy to clean
Available Easy Wash® hinge lets you clean the exterior from inside your home.
Security & seal
Multi-point locking engages the sash at several points for a snug, secure closure.
More view, less frame
Optional Clear View® hinge keeps the sash tight to the frame for expanded glass area.
Design that fits your home
Optional EverWood® screen wrap can be stained to match interior trim for a seamless finish.
Built for Colorado: Materials, Finishes & Glass
Ultrex® fiberglass strength
Dimensionally stable material resists warping and movement through extreme temperature swings, key for Denver’s sun-by-day, freeze-by-night weather.
Exterior & interior finishes
Durable exterior colors plus interior options—including EverWood®—to blend with existing décor. Ask to see full, in-person samples in our showrooms.
Performance glass packages
- Low E1: boosts passive solar heat gain in colder exposures.
- Low E2: balanced, year-round performance.
- Low E3: helps manage intense sun exposure.
- Low E3/ERS: maximum efficiency across seasons.
Popular Casement Configurations
- Single casement
- Two-wide casement
- Round-top picture mull combinations
- Picture window mull groupings
Custom sizes and specialty shapes available. We’ll measure precisely, recommend glass by elevation/exposure, and handle installation end-to-end.
Expert Installation You Can Feel on Day One
- Laser-accurate pre-measure and scope review
- Clean removal of old units and prep of openings
- Colorado-tested flashing, sealing, and insulation
- Set, level, and secure with multi-point checks
- Customer walkthrough, operation demo, spotless cleanup
Tarps down, furniture protected, site left cleaner than we found it. That’s the standard.
Get Your Free Casement Window Quote
See why Denver homeowners choose Infinity from Marvin for lasting performance and design flexibility.
Casement Window FAQs
How long do Infinity casement windows last in Colorado?
Ultrex® fiberglass resists warping, cracking, and fading, so many homeowners enjoy decades of performance, far beyond the 7–10 years typical of bargain vinyl.
Are casement windows energy efficient?
Yes. The sash weatherstripping compresses into the frame with multi-point locking for a tight seal, and Low-E glass packages help keep interiors comfortable year-round.
Do casement windows work for hard-to-reach spots?
They’re ideal above kitchen sinks or deep countersthe crank handle makes opening and closing simple.
Can I match my interior trim?
Yes. Interior finish options include stainable EverWood® plus painted finishes to coordinate with your home.

Why Choose Casement Windows for Your Denver Home?
Casement windows are the ultimate choice for energy efficiency and comfort. Their single sash design gives you a full view of your surroundings while keeping out unwanted drafts when closed to create an airtight seal — helping lower those hefty utility bills significantly! The convenient side-opening feature allows easy access to fresh ventilation whenever needed — making this your go-to window option if cost savings and coziness are key.
By choosing our casement windows, you not only experience the benefits of reduced energy costs but can rest assured that your windows will last. These windows create a comfortable living environment, where you can enjoy a consistent temperature and optimal indoor air quality. Say goodbye to fluctuating temperatures, and say hello to a home that provides comfort year-round.
Expert Casement Window Installation in Denver
The Infinity casement windows from Gravina’s Window Center of Littleton® offer exceptional energy efficiency compared to other window styles due to the airtight seal between the window sash and frame completed during manufacturing. This diminishes the drafty air that can pass through the window, helping to keep your home at the ideal temperature year-round. Further, our casement windows are easy to clean and available in several different designs and finishes to match the décor of your home elegantly. Choose between single-casement windows, double-casement windows, and even triple-wide casement windows. Infinity can customize casement windows to meet precise size and shape requirements for your residential window replacement project.
