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Andersen 100 Series Windows
Fibrex® Composite

Andersen 100 Series Windows

The 100 Series is built from Andersen's exclusive Fibrex® material — a composite of roughly 40% reclaimed wood fiber and 60% thermoplastic polymer. It's twice as strong as vinyl, resists fading, and holds dark colors beautifully, giving you a clean, modern window at a smart price.

100% Fibrex® composite2× stronger than vinylLow maintenanceENERGY STAR® certified
★★★★★4.9/5 from 600+ verified reviews
★★★★★
4.9 / 5 Rating
600+ verified reviews
Trusted Since 1997
28+ years in the region
120+ Years of Andersen
Built & warrantied to last
ENERGY STAR Certified
Low-E4® High-Performance™ glass
Why the 100 Series

Built to perform, made to last.

Emerald City Energy is an authorized Andersen installer serving the Puget Sound since 1997 — here's what sets the Andersen 100 Series apart.

Twice as strong as vinyl

Fibrex frames are rigid and durable, allowing slimmer profiles and more glass than ordinary vinyl windows.

Dark colors that last

Unlike vinyl, Fibrex holds rich, dark exterior colors without warping or fading in the Northwest sun.

Energy efficient

Insulating frames and High-Performance™ Low-E4® glass help cut energy bills and block UV.

Sustainably made

Fibrex reuses wood fiber that would otherwise be waste — strength with a smaller footprint.

Styles & Configurations

100 Series window & door types.

A range of operating styles to fit every room, view, and architectural look — all installed by Emerald City Energy.

Andersen 100 Series casement window
Casement
Andersen 100 Series awning window
Awning
Andersen 100 Series single-hung window
Single-Hung
Andersen 100 Series double-hung window in black
Double-Hung
Andersen 100 Series gliding window
Gliding
Andersen 100 Series picture window
Picture
Andersen 100 Series gliding patio door
Gliding Patio Door
Compare the Lineup

How the Andersen series compare.

Not sure which line is right for your home? Here's the full Andersen lineup at a glance.

SeriesMaterialBest forPrice tier
100 SeriesFibrex® compositeModern, low-maintenance, value$$
200 SeriesWood / vinyl exteriorAffordable real-wood warmth$$
400 SeriesWood / Perma-Shield®Best overall — most popular$$$
A-SeriesComposite / woodBest performance & architecture$$$$
E-SeriesWood / aluminumMaximum customization$$$$$
Keep Exploring

Other Andersen series

Frequently Asked Questions

Andersen 100 Series questions, answered.

Fibrex is Andersen's patented composite made of about 40% reclaimed wood fiber and 60% thermoplastic polymer. It combines the strength and insulating value of wood with the low maintenance of vinyl, and it's roughly twice as strong as vinyl alone.

For most homeowners, yes. Fibrex frames are stronger and more rigid than vinyl, allow slimmer sightlines with more glass, and hold dark colors without the warping or fading common to vinyl — all at a comparable price point.

The 100 Series offers a curated palette of interior and exterior colors, including popular dark shades like black and bronze that Fibrex can hold long-term without fading.

Yes. 100 Series windows can be configured with Andersen's High-Performance™ Low-E4® glass and meet ENERGY STAR® guidelines for our Northern climate zone, helping lower heating and cooling costs.

Yes. We're an authorized Andersen installer serving Seattle, Tacoma, Bellevue, and the greater Puget Sound. Every installation is handled by our own trained crews and backed by our workmanship guarantee.

Still have questions? Request a free quote or call (425) 228-1792.

Limited-Time Financing

Upgrade your windows with confidence.

Don't let cost slow down your project. With $0 down, 0% interest, and 18 months to pay, new Andersen windows and doors have never been easier.

$0Down
0%Interest
18Months

Subject to credit approval. Ask us for full terms & details.

18 months, no interest financing available — apply today
0% APR
See & Feel the Difference

Compare Andersen in person.

Touch the frames, test the hardware, and talk through series with a real expert — no appointment pressure.

Tukwila showroom Open M–F

Tukwila

3225 S 116th St, Suite #117
Tukwila, WA 98168
Mon–Fri · 9 AM – 5 PM
Get directions →
Bothell showroom Open M–F

Bothell

23905 Meridian Ave S
Bothell, WA 98021
Mon–Fri · 9 AM – 5 PM
Get directions →
Seattle showroom By Appointment

Seattle

8760 Greenwood Ave N
Seattle, WA 98103
By Appointment Only
Get directions →
Loved by Neighbors

What homeowners are saying

4.9
★★★★★
Based on 600+ verified reviews
Let's Get Started

Your new Andersen windows are
one free quote away.

Tell us about your project and a local expert will reach out — usually within 24 hours — with honest guidance and clear pricing.

  • No-pressure, no-obligation consultation
  • Authorized Andersen installer since 1997
  • Flexible financing available
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