Quantum Windows and Doors
Quantum Windows and Doors is a privately held custom architectural fenestration manufacturer producing made-to-specification wood, clad, and steel windows and doors for discerning architects, builders, and homeowners across North America.
- Company typePrivate
- Founded1982
- HeadquartersEverett, United States
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What Quantum Windows and Doors does
Quantum Windows and Doors, Inc. is a privately held, founder-owned custom architectural fenestration manufacturer founded in 1982 in the Pacific Northwest. Originally established as Quantum Wood Windows, Inc. by two general contractors frustrated with mass-produced window quality, the company now operates from a production facility in Arlington, WA, with its original headquarters in Everett, WA. Quantum designs and fabricates custom wood, clad, and steel windows and doors — including lift & slide systems, slide & fold systems, hinged and pivot doors, curtain walls, and specialized window series (Signature, Classic, Legacy, Euro) — entirely to architect and project specifications. Technical differentiators include a breathable clad system that manages moisture, narrow sight-line steel fenestration, multi-point locking hardware, and configurable large-format opening systems.
The company sells on a project-by-project quote basis through direct engagement with architectural firms, custom home builders, and homeowners. Go-to-market relies on a portfolio-driven website, downloadable CAD files and architectural binders for specifiers, and earned media presence in publications such as Architectural Digest, Dwell, Wallpaper, and Dezeen, where Quantum-specified projects have won AIA, Interior Design Best of Year, Builder's Choice, and PCBC Gold Nugget awards. Customer segments are weighted toward architects and custom home builders, with secondary exposure to commercial developers and discerning homeowners. Geographic reach is primarily North America (US and Canada), though the company claims international market presence through specification work.
Revenue mechanics are based on one-time sales of custom-manufactured fenestration systems, supplemented by ancillary CAD and technical documentation support for specifiers. Pricing is not publicly disclosed and varies by project complexity, materials (galvanized steel, stainless steel, Corten steel, brass, clad, or wood), and configuration. The company remains locally owned with no disclosed institutional investors, parent company, subsidiaries, or completed M&A, operating with a stable headcount in the 51-100 range. Leadership includes Chairman Gordon Gardiner and Project/Marketing Manager Wyatt Kelly.
Quantum Windows and Doors firmographics
Firmographics- Name
- Quantum Windows and Doors
- Legal name
- Quantum Windows and Doors
- Website
- https://quantumwindows.com
- Company type
- Private
- Founded year
- 1982
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Quantum Windows and Doors is a privately held custom architectural fenestration manufacturer producing made-to-specification wood, clad, and steel windows and doors for discerning architects, builders, and homeowners across North America.
- Ownership category
- akta.pro rank
Quantum Windows and Doors industry classification
Industry- Product category
- Architectural Fenestration (Custom Windows and Doors)
- NAICS
- Metal Window and Door Manufacturing (332321), Wood Window and Door Manufacturing (321911)
- SIC
- Metal Doors, Sash, Frames, Moldings & Trim (3442), Lumber & Wood Products (No Furniture) (2400)
- akta.pro primary industry
- Windows (IMADAIAC)
- akta.pro secondary industries
- Interior Doors (IMADAIAB), Frames, Sashes, Mullions & Subframes (IMADAIAH)
Keywords
Where Quantum Windows and Doors is headquartered
LocationHeadquarters
- HQ city
- Everett
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Quantum Windows and Doors business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Custom Window Sales: Quantum manufactures and sells custom architectural wood, clad, and steel windows and doors directly to architects, builders, and homeowners. Products are made to specification for each project.
- Custom Door Systems: Sale of custom architectural door systems including lift & slide, slide & fold, hinged, and pivot doors in wood, clad, and steel materials.
- CAD and Technical Documentation: Access to CAD files, architectural binders, and technical manuals provided to architects and builders for specification purposes.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Quantum Windows and Doors product offering
Product offeringCore offering
Quantum Windows and Doors handcrafts custom architectural windows and doors in three material lines — wood, aluminum-clad wood, and steel — for discerning architects, custom builders, and homeowners. Each unit is made to specification, including Lift & Slide, Slide & Fold, Hinged & Pivot, and curtain wall systems, with operations spanning casement, double hung, tilt-turn, pivot, awning, and fixed window types. The company pairs in-house fabrication with a breathable cladding system and ships completed fenestration products throughout North America.
Product overview
Quantum Windows and Doors is a custom architectural fenestration manufacturer producing three distinct product lines: Wood, Clad, and Steel. The Wood line includes Signature, Classic, Legacy, and Euro Series windows plus Lift & Slide, Slide & Fold, and Hinged & Pivot doors. The Clad line offers aluminum-clad versions of windows and doors for enhanced weather resistance. The Steel line includes windows, curtain walls, and various door systems. All products are custom-manufactured for discerning architects, builders and homeowners, emphasizing craftsmanship, design innovation, and sustainable materials.
Differentiator
Problem solved
Functional benefit
Products and services
- Quantum Wood Windows and Doors Custom architectural wood windows and doors including Signature Series (casement, fixed, awning, special shapes), Classic Series (custom mullion-based window wall systems), Legacy Series (traditional double hung with modern gasket and glazing), Euro Series (stile and rail, multi-point locking, pivot, tilt/turn), plus Lift & Slide, Slide & Fold, and Hinged & Pivot doors. Built to specification for architects, custom builders, and homeowners.
- Quantum Clad Windows and Doors Custom clad windows and doors integrating the proprietary Quantum Clad Breathable System, which allows air and water to flow freely to prevent moisture accumulation on the wood surface. Includes clad windows (casements, awnings, direct set, fixed sash) and clad Lift & Slide, Slide & Fold, and Hinged & Pivot doors with surface-mounted clad systems and custom wood profiles.
- Quantum Steel Windows and Doors Custom steel windows, curtain wall systems, and door systems (Lift & Slide, Slide & Fold, Hinged & Pivot) combining thermal insulation with high values in air, water, and sound transmission. Available in galvanized steel, stainless steel, Corten steel, and brass; intended for new construction, historical replacement, and harsh weather conditions.
Quantifiable outcome
- Products featured on multiple AIA architectural tours including Austin, Honolulu, and national housing awards
- +2 more outcomes
Companies that use Quantum Windows and Doors
Customer profileNamed customers11 records
Segments4 records
Ideal customer profiles3 records
Quantum Windows and Doors technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Quantum Windows and Doors partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Lake GlassminorLake Glass is mentioned as a partner in the Arnholt Residence project in Big Sky, Montana. They worked alongside Quantum on this high-end residential project featuring clad windows designed for harsh mountain conditions.
Scale indicators3 records
Recent moves3 records
Expansion highlights3 records
Quantum Windows and Doors competitors and assessment
Company assessmentDirect peers
- Western Window Systems: Manufacturer of multi-slide, lift-and-slide, and folding door systems emphasizing large glass openings for modern residential architecture; overlaps Quantum's clad lift & slide and slide & fold offerings.
- Marvin Windows and Doors: Family-owned U.S. manufacturer of made-to-order wood, clad, and specialty windows and doors for architects and custom builders — directly comparable in product mix, custom build model, and target customer (architects, luxury homebuilders).
- Weather Shield Windows & Doors: Custom wood, clad, and impact window/door manufacturer serving residential and commercial builders; comparable in materials and dealer/specifier GTM.
- Sierra Pacific Windows: Manufactures custom wood, clad, and aluminum windows and doors for residential and light commercial projects; overlapping product portfolio and custom builder/architect channel.
- Loewen Windows: Premium custom wood and clad window/door maker focused on the high-end residential market with strong architect relationships; comparable to Quantum in materials, customization, and prestige positioning.
- Hope's Windows: Specialist in custom steel and bronze windows and doors for high-end architectural projects — directly comparable to Quantum's Steel product line and luxury institutional/residential market.
Regional players
- Crittall Windows: Historic U.K.-based maker of steel windows and doors for residential and commercial projects; comparable to Quantum's steel fenestration line but primarily serves the U.K./European market rather than North America.
Broad incumbents
- Pella Corporation: Major U.S. window and door maker offering wood, clad, and fiberglass lines (including Architect Series for custom projects); a scaled incumbent competing for the same architect specifications.
- Andersen Corporation: Largest U.S. window and door manufacturer with E-Series custom, clad, and specialty lines serving both custom and production builders; broader portfolio but overlaps Quantum's premium custom tier.
- JELD-WEN: Global manufacturer of windows and doors (including wood, clad, and steel-look lines) for residential and commercial markets; broader and more volume-oriented than Quantum but shares the fenestration category.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Quantum Windows and Doors social profiles
Digital presenceQuantum Windows and Doors financial estimates
Financial estimateRevenue estimate
Valuation estimate
Quantum Windows and Doors leadership team
Management profileNumber of profiles
Profiles2 records
Quantum Windows and Doors funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Quantum Windows and Doors M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Quantum Windows and Doors
What does Quantum Windows and Doors do?
Quantum Windows and Doors handcrafts custom architectural windows and doors in three material lines — wood, aluminum-clad wood, and steel — for discerning architects, custom builders, and homeowners. Each unit is made to specification, including Lift & Slide, Slide & Fold, Hinged & Pivot, and curtain wall systems, with operations spanning casement, double hung, tilt-turn, pivot, awning, and fixed window types. The company pairs in-house fabrication with a breathable cladding system and ships completed fenestration products throughout North America.
Is Quantum Windows and Doors a public or private company?
Quantum Windows and Doors is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Quantum Windows and Doors founded?
Quantum Windows and Doors was founded in 1982. It employs 51 to 100 people.
Where is Quantum Windows and Doors based?
Quantum Windows and Doors is headquartered in Everett, United States, in the North America region.
How does Quantum Windows and Doors make money?
Three revenue lines are on record. Custom Window Sales are the primary driver. The others are custom Door Systems and CAD and Technical Documentation.
Who are Quantum Windows and Doors's main competitors?
Direct peers on record are Western Window Systems, Marvin Windows and Doors, Weather Shield Windows & Doors, Sierra Pacific Windows, Loewen Windows and Hope's Windows. Crittall Windows is listed as a regional player. Broad incumbents are Pella Corporation, Andersen Corporation and JELD-WEN.
Does Quantum Windows and Doors have an API?
No public API is recorded for Quantum Windows and Doors.
What industry is Quantum Windows and Doors in?
Quantum Windows and Doors's product category is Architectural Fenestration (Custom Windows and Doors). Its primary akta.pro industry code is IMADAIAC, Windows, with a secondary code of IMADAIAB, Interior Doors. Its NAICS code is 332321 and its SIC code is 3442.