Impact Window & Door Manufacturers
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We install PGT, ES Windows, CGI, ECO, WinDoor, CWS, and more. Our consultants help you choose the right product for your home, budget, and timeline.
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Compare Manufacturers at a Glance
Understanding the Corporate Landscape
The impact window industry is consolidating. Knowing who owns what helps you understand warranty backing, parts availability, and brand futures.
MITER Brands Koch-backed
- PGT — Flagship brand
- WinDoor — Luxury tier
- ECO Window Systems — Budget tier
- CGI — Discontinued Oct 2025
Pella Corporation Private
- CWS — Impact specialist
- Lawson — Retired Sept 2024
Independent
- ES Windows — Tecnoglass (NYSE: TGLS)
- EAS — Eastern Metal Supply
PGT is the largest manufacturer of impact-resistant windows and doors in America. First to achieve a complete residential impact window and door line approved by Miami-Dade County, PGT holds more NOA certifications than any other manufacturer. Their flagship WinGuard line is available in both aluminum and vinyl, with proprietary Diamond Glass technology and SecureConnect reinforced frame connections. Now part of MITER Brands (Koch-backed), PGT continues to invest in innovation while maintaining the industry's largest dealer and installer network.
Key Strengths
- Most Miami-Dade NOAs in the industry
- Both aluminum and vinyl impact lines
- Diamond Glass proprietary laminated glass
- Proven through 40+ years of Florida hurricanes
- Largest installer/dealer network
Product Lines
CGI pioneered impact-resistant windows in South Florida after Hurricane Andrew in 1992. Known for heavy-duty aluminum construction and an uncompromising focus on maximum hurricane protection, CGI was the premium choice for Miami-Dade and Broward homeowners for decades. Following MITER Brands' acquisition of PGT Innovations, the CGI Sentinel and Estate lines were discontinued in October 2025. The Sparta series continues under the PGT brand. Existing CGI warranties remain valid under PGT's service infrastructure.
Key Strengths
- Heavy-duty aluminum frames built for maximum protection
- Strong legacy in Miami-Dade HVHZ market
- Warranties honored by PGT service team through July 2026
- Sparta series continues under PGT branding
Product Lines
ES Windows, a division of NYSE-listed Tecnoglass, has become the top-selling hurricane window manufacturer in Florida by volume. Their vertically integrated 3.6 million square-foot facility in Barranquilla, Colombia produces their own aluminum extrusions and glass in-house — a critical advantage that allows them to include premium features standard that competitors charge 10-20% extra for. Low-E coating, Kynar/Dynar finishes, heat-strengthened glass, and stainless-steel hardware are all included at no upcharge. The Elite line serves mid-range residential, while the Prestige line offers frameless butt-glass windows over 15 feet tall for premium projects.
Key Strengths
- #1 selling impact window in Florida by volume
- Premium features included free (Low-E, Kynar, stainless hardware)
- ~20% less expensive than PGT for comparable specs
- Vertically integrated manufacturing (own extrusions + glass)
- Fastest delivery times — maintained 6-8 weeks during industry-wide delays
Product Lines
ECO Window Systems is the most affordable major manufacturer of impact windows and doors in South Florida. Based in Medley, FL (Miami-Dade County), ECO operates a 150,000 sq ft manufacturing facility and a separate 180,000 sq ft glass plant — giving them vertical integration on glass production. Now part of the MITER Brands/PGT family (100% acquired in 2023), ECO offers an extensive product range including impact windows, sliding glass doors, French doors, bifold doors, pivot doors, and even impact-rated garage doors. Popular for rental properties, multi-family buildings, and budget-conscious homeowners who still need Miami-Dade approved protection.
Key Strengths
- Most affordable major manufacturer
- Miami-Dade manufactured — shortest South Florida delivery
- Own glass plant for vertical integration
- Widest product range including pivot doors, bifolds, garage doors
- All products Miami-Dade approved for HVHZ
Product Lines
WinDoor is the luxury tier within the PGT Innovations family, manufactured in their 320,000 sq ft Orlando facility. Their products are specified for five-star resorts, luxury high-rise condominiums, and custom estates throughout Florida and the Caribbean. WinDoor's 8100 Series sliding glass door features one of the largest certified panels in the industry at 12 feet tall. Their thermally broken aluminum frames deliver superior energy performance while maintaining the clean sightlines expected in high-end architecture. Corner door configurations, pocketing systems, and the Envista seamless glaze window system set WinDoor apart from every other impact product on the market.
Key Strengths
- Largest certified sliding door panels in the industry (12' tall)
- Thermally broken aluminum for superior energy performance
- Corner door and pocketing configurations
- Manufactured-to-order customization
- Envista seamless glaze window system
Product Lines
Custom Window Systems (CWS) is the impact window specialist within the Pella Corporation portfolio. Manufacturing in Ocala, FL since 1986, CWS was the first window manufacturer in Florida to obtain an ENERGY STAR rating. Their Hurricane Guard line uses heavy-duty T6-6360 grade aluminum tested to withstand a 9 lb 2x4 at 50 fps — meeting the most stringent HVHZ coastal codes. Their StormStrong vinyl line fills a rare niche as one of the few vinyl impact window options in the Florida market. Following Pella's acquisition of Lawson Industries in 2023, CWS absorbed Lawson's aluminum product line and Medley manufacturing facility, expanding their capacity and product range.
Key Strengths
- Both vinyl AND aluminum impact products (rare)
- First Florida manufacturer with ENERGY STAR rating
- Backed by Pella Corporation resources
- Hurricane Guard meets HVHZ requirements
- Absorbed Lawson Industries products and manufacturing
Product Lines
Eastern Architectural Systems (EAS) is a division of Eastern Metal Supply, one of the largest aluminum distributors in the Southeast United States. Based in Fort Myers, FL, EAS has been manufacturing hurricane protection products since 1982. They are the only company in Florida whose vinyl impact windows carry the Good Housekeeping Seal of Approval (Bertha line). Their sliding door lineup is uniquely tiered — the 6000 Series is the least expensive impact sliding door on the market, while the 8100 Series offers premium features. EAS also manufactures the Bertha Hurricane Accordion Shutter, one of the best-selling accordion shutters in the market.
Key Strengths
- Only FL company with Good Housekeeping Seal on vinyl impact windows
- Tiered sliding door pricing (6000/7000/8100) for every budget
- Parent company Eastern Metal Supply — aluminum cost advantage
- 40+ years in hurricane protection (since 1982)
- Also manufactures Bertha accordion shutters
Product Lines
Lawson Industries served the Florida impact window market for over 60 years before Pella Corporation retired the brand in September 2024. All Lawson product manufacturing and support has transitioned to CWS (Custom Window Systems), a fellow Pella brand. Lawson's aluminum products and the Medley, FL manufacturing facility now operate under the CWS portfolio. Existing Lawson warranties remain valid under Pella/CWS, and replacement parts are available through CWS. If you have Lawson windows and need service, replacement, or warranty support, call 866-875-5518.
Key Strengths
- Existing warranties remain valid under Pella/CWS
- Replacement parts available through CWS
- Service hotline: 866-875-5518
- Products continued under CWS branding
- Medley, FL manufacturing continues under CWS
Product Lines
Frequently Asked Questions
It depends on your budget, property type, and location. For the best value with premium features included, we often recommend ES Windows. For the broadest selection and longest track record, PGT WinGuard is the market leader. For luxury custom homes, WinDoor offers the largest panels and best thermal performance. For budget-conscious projects or rentals, ECO Window Systems provides Miami-Dade approved protection at the lowest price point. Our consultants will recommend the best fit during your free in-home estimate.
Following MITER Brands' acquisition of PGT Innovations in March 2024, the CGI Sentinel and Estate product lines were discontinued on October 31, 2025. The CGI Sparta series continues under the PGT brand name. If you have existing CGI windows, your warranty remains valid — PGT's service team supports existing CGI installations through at least July 2026. Replacement parts are available with functionally equivalent components.
No. Pella Corporation retired the Lawson Industries brand on September 30, 2024. All Lawson products, manufacturing, and support have been transferred to CWS (Custom Window Systems), a fellow Pella brand. Existing Lawson warranties remain valid. For service, warranty, or replacement parts, call 866-875-5518. Many Lawson product equivalents are available through the CWS product line.
All major manufacturers we install offer HVHZ-approved products: PGT WinGuard, ES Windows, ECO Window Systems, CWS Hurricane Guard, EAS, and WinDoor. Note that some specific product lines within a brand may not carry HVHZ approval — for example, CWS StormStrong (vinyl) is approved for non-HVHZ Florida zones only. Your Armor Pro consultant will verify the correct product approval for your specific address and wind zone.
Yes. Armor Pro installs products from every manufacturer listed on this page. As an independent installer, we are not locked into any single brand — we recommend the best product for your specific situation based on your budget, property type, wind zone requirements, and aesthetic preferences. With over 3,000 installations across all major brands, we have deep experience with every product line.
Aluminum impact windows are stronger per inch of frame, allowing thinner profiles and larger glass areas. They achieve higher design pressure ratings and are required for most HVHZ (High Velocity Hurricane Zone) applications. Most Florida impact windows are aluminum. Vinyl impact windows offer better thermal insulation (lower U-factor) and are maintenance-free — they won't corrode, pit, or need repainting. PGT WinGuard Vinyl and CWS StormStrong are the primary vinyl impact options in the Florida market.