Andersen 100 Series Single-Hung Window

The Andersen 100 Series Single-Hung Window solves the vinyl window problem. Fibrex composite material delivers twice the strength and rigidity of vinyl, comes in sizes up to 4 feet wide by 7.6 feet high, and offers custom sizing in 1/8-inch increments. Energy-efficient glass comes standard with Low-E coating, plus ENERGY STAR certification when configured with SmartSun glass. The 20-year glass warranty and 10-year component warranty transfer fully to future homeowners.

This window makes sense for Montana contractors dealing with extreme temperature swings and clients who want proven durability in a non-vinyl material.

Material Performance and Thermal Benefits

Fibrex changes the budget window conversation. The composite material is twice as strong and more rigid than vinyl, with superior insulation properties that translate directly to heating bill savings. The material contains 40% reclaimed wood fiber by weight — not just marketing fluff, but actual performance improvement over straight vinyl.

Dark color stability matters on south-facing Montana installations. Where vinyl windows fade and warp under UV exposure, Fibrex maintains color integrity. The fade-resistant exterior finish won’t flake, blister, or peel. The material resists warping, cracking, and rot — critical when temperatures can swing 50 degrees in a day during chinook events.

Size Options and Glass Performance

Specification	Value
Maximum Width	4 feet (48 inches)
Maximum Height	7.6 feet (91.2 inches)
Custom Sizing	1/8-inch increments
Window Type	Single-hung (lower sash operates)

Glass options include standard Low-E coating, SmartSun Low-E4 upgrade for high performance, and dual-pane tempered with argon fill. Triple-pane glass joins the lineup in 2025. The window achieves ENERGY STAR v6.0 certification when configured with SmartSun glass — meeting Montana’s strict Climate Zone 6 energy requirements.

The single-hung design limits operation to the bottom sash. That’s the trade-off for simpler mechanics and fewer moving parts. Full ventilation control requires double-hung, but single-hung covers most residential needs while maintaining reliability.

Installation Flexibility and Warranty Coverage

Installation works two ways: insert replacement that uses the existing window frame, or full-frame replacement for complete renewal. T-brackets or connector pins handle larger window units. The window suits new construction, remodels, and replacements across living rooms, bedrooms, kitchens, and other common residential spaces.

The Owner-2-Owner Limited Warranty runs 20 years on glass, 10 years on non-glass components. Full transferability to future homeowners adds resale value — a selling point contractors can use when justifying the upgrade from builder-grade vinyl.

Available exterior colors include black, white, sandtone, dark bronze, and terratone. Interior colors offer white, black, sandtone, and dark bronze. Standard inclusions cover the window frame and sash unit, color-matched lock and keeper hardware, and fiberglass insect screen.

FAQ

What makes Fibrex better than vinyl for Montana’s climate?

Fibrex composite is twice as strong and more rigid than vinyl, providing superior insulation properties. The material resists warping, cracking, and rot — essential when dealing with temperature extremes and freeze-thaw cycles that destroy lesser windows.

Can these windows handle custom sizing for older homes?

Yes. The 100 Series offers custom sizing in 1/8-inch increments, with maximum dimensions of 4 feet wide by 7.6 feet high. This flexibility helps match existing openings without major framing modifications.

How does the warranty compare to other window brands?

The Owner-2-Owner warranty provides 20 years on glass and 10 years on components, with full transferability to future homeowners. That transferability adds value that cheaper windows can’t match.

What’s the real energy performance difference?

The window earns ENERGY STAR v6.0 certification when configured with SmartSun glass. Standard configuration includes Low-E glass, with SmartSun Low-E4 available as an upgrade. Triple-pane options arrive in 2025.