St. Cloud Window
St. Cloud Window is a privately held custom commercial aluminum window and door manufacturer serving architects, contractors, and developers. It specializes in U.S. Department of Interior-approved historic replication and laboratory-certified acoustic windows (STC up to 60) for landmark, performing arts, and institutional projects.
- Company typePrivate
- Founded1960
- HeadquartersSauk Rapids, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What St. Cloud Window does
St. Cloud Window (St Cloud Window, LLC) is a privately held, custom commercial aluminum window and door manufacturer headquartered in Sauk Rapids, Minnesota. Founded in 1952, the firm employs 11-50 people and operates as an independent LLC with no disclosed parent company or external funding. Its product portfolio is organized around two core franchises: U.S. Department of Interior-approved historic replica systems (SCW 2500, 3000, and 5000 Series) that replicate original sightlines, muntins, and profiles for National Historic Landmarks; and laboratory-certified acoustic window and curtain wall systems (SCW 900, 940, 960, and 9000 Series) achieving STC ratings up to 60 and OITC ratings up to 49. Additional lines include secondary glazing (SCW 380, 600), storefronts (SCW 4500), impact-resistant hurricane windows (SCW 564i, 5040i), commercial entrance and terrace doors, and multi-family residential sliding windows (SCW 3800). All products are independently tested and documented for replication across industries.
The firm serves enterprise customers — architects and designers, general contractors, property developers, and professional installers — working on landmark preservation, performing arts venues, museums, hotels, education, healthcare, and government projects. Reference projects include the Smithsonian Renwick Gallery, Kennedy Center Terrace Theatre, Disney Concert Hall REDCAT Theatre, Winspear Opera House, Stavros Niarchos Foundation Cultural Center (Athens), and numerous National Register-listed buildings. Pricing is project-based and quote-only with no public catalog or e-commerce channel, and engagements are structured as multi-year contracts. Go-to-market is exclusively enterprise field sales with the company embedded from early design through final installation. Distribution is direct with no dealer or self-serve channel. Marketing is built around project portfolio case studies, AIA-approved continuing education courses, downloadable technical guides, and industry association affiliations (AIA, CSI, NFRC, ACEP, CMMA, and historic preservation bodies).
St. Cloud Window firmographics
Firmographics- Name
- St. Cloud Window
- Legal name
- St Cloud Window, LLC
- Website
- https://stcloudwindow.com
- Company type
- Private
- Founded year
- 1960
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- St. Cloud Window is a privately held custom commercial aluminum window and door manufacturer serving architects, contractors, and developers. It specializes in U.S. Department of Interior-approved historic replication and laboratory-certified acoustic windows (STC up to 60) for landmark, performing arts, and institutional projects.
- Ownership category
- akta.pro rank
St. Cloud Window industry classification
Industry- Product category
- Commercial Windows and Doors
- NAICS
- Glass and Glazing Contractors (238150), Glass and Glazing Contractors (23815)
- akta.pro primary industry
- Windows (IMADAIAC)
- akta.pro secondary industries
- Screens, Storm Doors/Windows & Insect Protection Systems (IMADAIAK), Skylights, Roof Windows & Daylighting (IMADAFAL)
Keywords
Where St. Cloud Window is headquartered
LocationHeadquarters
- HQ city
- Sauk Rapids
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
St. Cloud Window 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
Revenue model
- Custom Aluminum Windows and Doors: Bespoke commercial window and door manufacturing. Each product is custom-manufactured to project specifications for architects, contractors, developers, and preservation projects. Revenue is project-based with no standardized product catalog pricing.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Multi-year contract | Project-based custom quotation |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels6 records
St. Cloud Window product offering
Product offeringCore offering
St. Cloud Window is a custom manufacturer of commercial aluminum windows and doors engineered for high-performance applications. The company specializes in two overlapping niches: U.S. Department of Interior-approved narrow-line historic replication systems (SCW2500, SCW3000, SCW5000) used to protect National Historic Landmarks including the Smithsonian, and laboratory-certified acoustic window and curtain wall systems (SCW900, SCW9000, SCW940/960) achieving STC ratings up to 60 and OITC ratings up to 49 for noise abatement near airports, highways, rail, and in performing arts venues. Every product is custom-manufactured to exact project specifications with no standardized catalog pricing, supplied through direct enterprise field sales working with architects, general contractors, developers, and installers.
Product overview
St. Cloud Window is a commercial aluminum window manufacturer offering custom-engineered windows and doors for high-performance applications. The product portfolio centers on two main categories: Historic Windows (SCW 2500, 3000, and 5000 Series) for National Historic Landmarks and preservation projects requiring authentic steel replica replication with modern thermal performance; and Acoustic Windows (SCW 900 Series, SCW 9000 Curtain Wall, and high-acoustic SCW 940/960 Series) for noise abatement in airports, performing arts centers, recording studios, and urban environments achieving STC ratings up to 60. The company also produces Commercial Doors (SCW 3000 and 5000 Door Series), Secondary Glazing Systems (SCW 380 and 600 Series), Storefront & Entrance Systems (SCW 4500), Impact Windows (SCW 564i and 5040i), and SCW 3500/3800 Windows for residential and commercial applications. All products are laboratory-certified, independently tested, and documented for performance replication across industries.
Differentiator
Problem solved
Functional benefit
Products and services
- Historic Windows — SCW 2500 Series Historic steel replica aluminum windows designed to match original 1860s sightlines, muntins, and profiles for National Historic Landmarks and preservation projects. Features narrow sightlines, authentic trapezoid-shaped applied muntins, and modern thermal/energy efficiency. Used by architects, contractors, and developers on projects such as the Smithsonian Renwick Gallery, Ford Center, Davidson Hall at Virginia Tech, and Duluth Federal Courthouse.
- Historic Windows — SCW 3000 Series Historic steel replica windows with custom-designed profiles that honor original designs while delivering modern energy efficiency and thermal performance. Suitable for historic tax credit compliance, as deployed at The Confluence Hotel factory-to-hotel conversion.
- Historic Windows — SCW 5000 Series Historic steel replica windows with 5-inch frame depth, designed for historic preservation and rehabilitation projects requiring authentic replication with contemporary performance standards. Used on Duluth Federal Courthouse and other National Register buildings.
- Acoustic Windows — SCW 900 Series High-performance acoustic windows achieving STC ratings up to 60. Designed for noise abatement in airports, urban environments, performing arts centers, and recording studios. Available in double-hung, horizontal sliding, fixed, and casement configurations.
- Acoustic Curtain Wall — SCW 9000 Series Ultra-acoustic curtain wall systems designed to mitigate noise transmission while providing maximum natural light. Achieves STC ratings up to 52 and OITC ratings up to 45. Used in music studios, performing arts buildings, and commercial developments such as Baylor Scott & White Heart Hospital.
- High Acoustic Windows — SCW 940-A7, SCW 960-A7, SCW 960-A9 Premium acoustic windows with 7-9 inch frames achieving STC ratings of 54-58 and OITC ratings up to 43. Designed for control rooms, radio studios, and environments requiring exceptional sound isolation. Used at Residence Inn Alexandria Old Town South, Kennedy Center Terrace Theatre, and Our Lady of Victory School noise abatement project.
- Commercial Doors — SCW 3000 and SCW 5000 Door Series Commercial entrance systems, sliding glass doors, and terrace doors with hardware options providing historical accuracy, contemporary style enhancement, or distinctive design differentiation. Includes SCW 3000 and SCW 5000 door series with inswing, outswing, french, and garden door configurations.
- Secondary Glazing — SCW 380 and SCW 600 Series Interior storm window systems that protect original windows while providing thermal and acoustic performance without disrupting the building facade. Suitable for historic, acoustic, or impact applications.
- Storefront and Entrance Systems — SCW 4500 Storefront and entrance systems designed to restore original historic appearances while providing modern thermal values and noise blocking capabilities.
- Impact Windows — SCW 564i and SCW 5040i Hurricane and impact-resistant windows designed to withstand high wind, heavy rain, and windborne debris. Tested for Florida sea turtle protection ordinances and severe weather requirements.
- SCW 3500 Windows High-performance aluminum windows for residential and commercial applications with energy efficiency ratings and narrow sightlines. Available in projecting casements and fixed configurations.
- SCW 3800 Windows Horizontal sliding windows designed for urban apartment buildings, known for energy efficiency and reliability in high-rise and multi-family residential applications.
Quantifiable outcome
- STC ratings up to 60 and OITC ratings up to 49 for acoustic performance
- +3 more outcomes
Companies that use St. Cloud Window
Customer profileNamed customers14 records
Segments6 records
Ideal customer profiles3 records
St. Cloud Window technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
St. Cloud Window partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and minor.
- AIA (American Institute of Architects)coreIndustry affiliation providing credibility and professional recognition. AIA members represent key specifiers for commercial window products.
- CSI (Construction Specifications Institute)coreIndustry association for construction specifications professionals who specify building products and materials.
- NFRC (National Fenestration Rating Council)coreIndependent organization that administers the only uniform, third-party rating and labeling system for windows, doors, and skylights.
- ACEP (Architectural Certification Evaluation Program)minorIndustry certification program for architectural products.
- CMMA (Commercial Metal Roofing Association)minorIndustry association for commercial metal building products.
- Historic Preservation OrganizationscorePartnership with historic preservation community including National Park Service, State Historic Preservation Offices, and preservation officers for landmark projects.
Scale indicators4 records
Recent moves5 records
Expansion highlights5 records
St. Cloud Window competitors and assessment
Company assessmentDirect peers
- EFCO Corporation: EFCO is a direct peer: a commercial aluminum window, curtain wall, and storefront manufacturer targeting institutional, healthcare, and high-rise projects with custom engineered systems - the closest functional competitor to St. Cloud in the spec-driven custom aluminum segment.
- Graham Architectural Products: Graham is a direct peer: a U.S. commercial aluminum window and door manufacturer with strong historic replication and acoustical product lines serving schools, universities, and government buildings - mirroring St. Cloud's preservation and acoustic specialty positioning.
- Wausau Window and Wall Systems: Wausau is a direct peer: a U.S. manufacturer of custom commercial aluminum windows, curtain walls, and historic-replication systems serving architects on landmark, healthcare, education, and government projects - directly overlapping St. Cloud's project types.
Broad incumbents
- Kawneer (Arconic): Kawneer is a broad incumbent: a large, established commercial aluminum window, entrance, and curtain wall provider owned by Arconic, serving similar architects and contractors across a much broader product catalog - competing on scale, distribution, and breadth rather than heritage-grade specialization.
- Oldcastle BuildingEnvelope: Oldcastle BuildingEnvelope is a broad incumbent: a major manufacturer and supplier of architectural glazing systems, storefronts, and curtain walls across North America, overlapping with St. Cloud on commercial fenestration but operating as a much larger portfolio player.
- Pella Corporation: Pella is a broad incumbent: a large national window and door manufacturer with a commercial division; relevant given it competes for architectural specifications on commercial and historic projects, though its core strength is residential and mid-market commercial.
- Marvin Windows and Doors: Marvin is a broad incumbent: a premium custom window and door manufacturer with a commercial and architectural solutions group, comparable in customization and project-based approach though broader in materials (wood/clad) than St. Cloud's aluminum focus.
- Andersen Windows & Doors: Andersen is a broad incumbent: a very large national window and door manufacturer with commercial and E-Series custom lines; overlap is indirect through custom commercial projects, but Andersen competes for specification attention on institutional and hospitality jobs.
- YKK AP America: YKK AP is a broad incumbent: a global manufacturer of commercial aluminum fenestration, entrances, and curtain walls serving institutional and high-rise projects - relevant as a scale competitor on commercial projects that may overlap with St. Cloud's GC/developer relationships.
Emerging players
- Vitrocsa: Vitrocsa is an emerging/specialty player: known for ultra-slim framed operable glazing targeting high-end residential and boutique commercial projects - an adjacent specialty competitor in the premium custom glazing niche rather than a direct mass-market rival.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
St. Cloud Window social profiles
Digital presenceSt. Cloud Window financial estimates
Financial estimateRevenue estimate
Valuation estimate
St. Cloud Window leadership team
Management profileNumber of profiles
St. Cloud Window funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
St. Cloud Window 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 St. Cloud Window
What does St. Cloud Window do?
St. Cloud Window is a custom manufacturer of commercial aluminum windows and doors engineered for high-performance applications. The company specializes in two overlapping niches: U.S. Department of Interior-approved narrow-line historic replication systems (SCW2500, SCW3000, SCW5000) used to protect National Historic Landmarks including the Smithsonian, and laboratory-certified acoustic window and curtain wall systems (SCW900, SCW9000, SCW940/960) achieving STC ratings up to 60 and OITC ratings up to 49 for noise abatement near airports, highways, rail, and in performing arts venues. Every product is custom-manufactured to exact project specifications with no standardized catalog pricing, supplied through direct enterprise field sales working with architects, general contractors, developers, and installers.
Is St. Cloud Window a public or private company?
St. Cloud Window is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was St. Cloud Window founded?
St. Cloud Window was founded in 1960. It employs 11 to 50 people.
Where is St. Cloud Window based?
St. Cloud Window is headquartered in Sauk Rapids, United States, in the North America region.
How does St. Cloud Window make money?
One revenue line is on record: custom Aluminum Windows and Doors.
Who are St. Cloud Window's main competitors?
Direct peers on record are EFCO Corporation, Graham Architectural Products and Wausau Window and Wall Systems. Broad incumbents are Kawneer (Arconic), Oldcastle BuildingEnvelope, Pella Corporation, Marvin Windows and Doors, Andersen Windows & Doors and YKK AP America. Vitrocsa is listed as an emerging player.
Does St. Cloud Window have an API?
No public API is recorded for St. Cloud Window.
What industry is St. Cloud Window in?
St. Cloud Window's product category is Commercial Windows and Doors. Its primary akta.pro industry code is IMADAIAC, Windows, with a secondary code of IMADAIAK, Screens, Storm Doors/Windows & Insect Protection Systems. Its NAICS code is 238150.