FENESTRATION
SOLUTIONS FOR EVERY PROJECT and FOR EVERY CHALLENGE.
Quanex is a global fenestration component supplier serving OEM window and door manufacturers, IG fabricators, curtain wall producers, architects, distributors, and dealers.
We engineer high-performance components that improve efficiency, durability, and long-term building performance across residential and commercial applications.
From insulating glass spacer systems to vinyl profiles, hardware, weatherseals, screens, millwork, and thresholds, our solutions are built to perform and built to integrate seamlessly into your operation.
A Complete Fenestration Component Supplier for Window & Door Manufacturers
Quanex delivers integrated components engineered to improve performance, streamline production, and strengthen your competitive advantage. Explore our full portfolio of fenestration products and solutions below.
High-performance spacer systems, sealants, and thermal solutions engineered to enhance energy efficiency, durability, and long-term IG unit performance. Designed to meet evolving code requirements and manufacturing demands.
Custom vinyl profiles and extrusion systems built for structural integrity, thermal performance, and production efficiency. Engineered to support modern window and door designs while optimizing fabrication processes.
Precision-engineered hardware and sealing solutions designed to improve durability, operational performance, and long-term system reliability. From locking systems to advanced weatherseals, our components enhance security, comfort, and energy-efficiency.
High-quality millwork solutions engineered for window and door applications, enhancing both aesthetic appeal and functional performance. From custom mouldings and casing to jambs, grilles, and trim.
Advanced sill and threshold solutions engineered to resist air and water infiltration, meet ADA requirements, and simplify installation, powered by ImperiSeal™ technology.
Complete screen systems, including new AAMA 1901-25 rated security screen solutions, built to streamline OEM production, reduce labor demands and elevate product differentiation.
We are a global leader in extruded warm-edge spacer systems for insulating glass (IG) units, delivering proven thermal performance, long-term durability, and production flexibility for window and door manufacturers. As a trusted fenestration component supplier, we engineer spacer technologies that reduce heat transfer at the edge of the glass—the most vulnerable area for energy loss, condensation, and seal stress.
Our flexible spacer portfolio includes Super Spacer®, Duralite®, Duraseal®, and Decoseal®, each designed to improve IGU longevity while supporting efficient manufacturing processes.
Warm-edge spacer systems play a critical role in achieving energy-efficient window performance. By reducing thermal bridging at the edge of the glass, our extruded spacer systems help manufacturers:
- Meet ENERGY STAR® performance targets
- Improve U-values and condensation resistance
- Protect seals from environmental stress
- Extend IG unit service life
- Support long-term warranty performance
Unlike rigid metal spacers, our flexible foam-based and integrated systems flex with temperature fluctuations, reducing seal failures and premature breakdown.
Our team works directly with IG fabricators to evaluate equipment configurations, optimize line layouts, and ensure seamless integration into existing processes.
For manufacturers expanding glass shop operations or upgrading equipment, our technical specialists provide hands-on implementation support to ensure consistent quality from day one.
Whether producing hundreds of IG units per day or running high-volume automated lines, Quanex spacer systems are engineered for compatibility across:
- Manual IG assembly
- Semi-automated production
- Fully automated, high-speed IG manufacturing
Dual-seal systems like Super Spacer® support residential and light commercial applications requiring long-term durability and structural performance.
Single-seal systems like Duralite® and Duraseal® offer streamlined, one-step supplication to improve throughput while maintaining strong thermal performance.
Decoseal® provides the enhanced thermal performance of a standard unit, but for decorative glass, reducing the assembly steps necessary in the fabrication process of triple glazing.
Quanex is a leading uPVC window profile supplier in the USA, delivering commercial and residential vinyl extrusion systems engineered for superior energy performance and long-term durability. As a global fenestration component supplier, we design profiles to meet regional performance requirements, aesthetic expectations and evolving energy codes.
Our proprietary MikronBlend® vinyl compound is formulated to withstand extreme weather conditions while maintaining exceptional consistency from batch to batch. Used exclusively in all of our vinyl window and door profiles, MikronBlend delivers strength, dimensional stability and performance reliability that manufacturers can depend on.
Today’s window and door systems must meet increasingly stringent thermal and structural requirements. Quanex vinyl profiles are engineered to support:
- Outstanding thermal performance to meet demanding energy standards
- Air, water, and structural performance targets
- FGIA and AAMA compliance requirements
- Impact ratings for hurricane-prone regions
- Improved acoustic performance in noise-sensitive environments
For architects and specifiers, this means confidence that specified systems will perform as intended.
For OEMs and fabricators, it means predictable compliance and reduced risk during testing and certification.
Beyond field performance, our extrusion systems are built for scalable production.
With in-house design and testing, precision tooling, and advanced blending capabilities, Quanex collaborates with manufacturers to develop next-generation window and door systems tailored to specific market needs. Once a design is finalized, our teams support implementation strategies that help ensure consistent, repeatable manufacturing results.
Whether you require:
- Full window systems
- Custom extrusion profiles
- Residential door casing profiles
- Sliding door systems
- Commercial door solutions
Quanex delivers engineered vinyl and composite profile systems proven in real-world applications across residential, multifamily, and commercial markets.
As a global fenestration component supplier, Quanex delivers a comprehensive portfolio of window and door hardware and performance sealing systems engineered to enhance durability, security, and long-term reliability.
Our hardware solutions combine decades of engineering expertise with internationally recognized brands, including:
- AmesburyTruth – Custom-engineered window and door hardware known for durability and performance
- ERA – Advanced mechanical and electronic security solutions blending heritage and innovation
- Giesse – Premium aluminum window and door hardware recognized for technical innovation
- Reguitti – Elegant decorative hardware designed with modern aesthetics in mind
- Zoo – High-quality architectural door hardware combining reliability and contemporary design
This global portfolio allows OEMs, curtain wall fabricators and specifiers to source performance-driven hardware and design-forward finishes from a single trusted partner.
Window and door hardware plays a critical role in structural performance, air and water ratings, security, and user experience. Our systems are designed to:
- Support demanding structural and operational performance requirements
- Enhance multi-point locking and advanced security applications
- Deliver corrosion resistance in coastal and high-humidity environments
- Integrate seamlessly into vinyl, aluminum, and composite systems
- Meet regional and international performance standards
For architects and specifiers, this means access to tested, globally distributed hardware platforms.
For OEM manufacturers, it means scalable sourcing, technical collaboration, and consistent product availability.
Complementing our hardware portfolio, Quanex manufactures advanced extruded weatherseal solutions engineered to maintain long-term compression recovery and protect against air, water, and noise infiltration.
Designed for integration into modern window and door systems, our weatherseals help manufacturers:
- Improve air and water performance ratings
- Enhance acoustic control
- Reduce thermal leakage
- Maintain long-term sealing performance under repeated compression cycles
- Support energy-efficient window and door system design
By combining hardware, weatherseals, and extrusion expertise under one roof, Quanex simplifies sourcing and ensures system-level compatibility across the entire fenestration assembly.
Quanex delivers high-quality millwork solutions engineered specifically for window and door applications, combining aesthetic appeal, precision engineering, and long-term durability. Our components help manufacturers, fabricators, and specifiers achieve consistent, premium finishes while streamlining production and installation. From custom mouldings and casing to jambs, grilles, and trim, our solutions integrate seamlessly with modern fenestration systems.
Our millwork components are designed to complement residential and commercial windows and doors, providing both decorative appeal and functional performance.
Quanex offers:
- Custom mouldings – base, casing, chair rails, panel mouldings, crown mouldings, and more
- Door and window components – jambs, sash, brick mould, grilles, and pocket door frames
- Profile wrapping options – wood veneer, vinyl, or paintable surfaces for flexible aesthetics
Every profile is engineered for consistency, durability, and compatibility with fenestration systems, ensuring seamless integration with your designs and existing window and door products.
With over 30 hardwood and softwood species in various thicknesses and grades, Quanex provides versatility for any project. We also deliver engineered and finger-jointed boards up to 24 feet long, reducing warping while maintaining structural integrity. Our in-house processes ensure:
- Batch-to-batch quality with precise CAD-designed profiles
- High-performance primer for superior adhesion and streamlined finishing
- Efficient gluing and wrapping processes for wider, thicker product applications
For architects and specifiers, our millwork delivers consistent aesthetics, design flexibility, and a high-quality finish to meet project vision and regulatory requirements.
For OEMs and window and door manufacturers, our components simplify sourcing, streamline production, and ensure compatibility with vinyl, aluminum, or composite window systems.
For fabricators, our precise CAD-matched profiles and batch-to-batch consistency reduce errors and improve operational efficiency.
Quanex designs and manufacturers high-performance door thresholds engineered to virtually eliminate air and water infiltration while meeting demanding code and ADA requirements. As a full-scope fenestration component supplier, we support entry door manufacturers with threshold systems that balance durability, energy efficiency, and streamlined production.
Whether you require a robust aluminum threshold, composite construction or the classic appearance of a hardwood door threshold strip, our systems are built for long-term performance in real-world conditions.
At the core of our premium threshold systems is ImperiSeal™ technology, a continuous sealing filament that positively seals the adjusting rail to the sill deck. This creates a unitary exposure surface that:
- Stops water at the threshold
- Virtually eliminates air and water infiltration
- Enhances long-term weather resistance
- Eliminates the need for sill pans in many applications
- Supports improved overall door system performance
For OEMs and installers, this means fewer callbacks and greater confidence in field performance.
For architects and specifiers, it means improved envelope integrity at a critical transition point.
Quanex door thresholds are designed to support:
- ADA accessibility requirements
- Energy-efficient entry systems
- Thermal break integration
- Corrosion resistance in demanding environments
- Structural durability under repeated traffic
Available in multiple sill widths, configurations (single, French/double, patio, continuous sidelite) and finish options, our systems are engineered to align with both performance goals and aesthetic expectations.
From the 5Y Sill with ImperiSeal™ to the 5C Can-Am Sill and FirstStep™ Sill, our portfolio offers composite substrates, thermal breaks, real wood options and flexible cut-down capabilities to meet diverse manufacturing requirements.
In addition to performance in the field, Quanex thresholds are built for integration on the production floor.
We offer:
- Pre-assembled components for improved line efficiency
- Custom-built configurations to your specifications
- Flexible rail and base options
- Simplified installation processes
- Consistent, repeatable manufacturing performance
By combining thresholds with complementary fenestration components, including hardware, weatherseals, screens, and extrusions, Quanex simplifies sourcing and improves system-level compatibility across the entire entry door assembly.
Quanex is a full-service window and door screens supplier and outsourcing partner, delivering both screen components and complete, ready-to-install screen systems built to your exact specifications. As a comprehensive fenestration component supplier, we help OEM window and door manufacturers streamline operations while elevating the value of their product offerings.
Screens are often labor-intensive, floor-space-consuming, and quality-sensitive. By partnering with Quanex, manufacturers can eliminate in-house screen production and gain:
- Reduced labor burden
- Optimized plant floor space
- Simplified inventory management
- Sequenced shipping aligned with production schedules
- Consistent, high-quality output built to OEM standards
At our dedicated screen production facilities, screens are not a secondary product, they are our core focus. That means fewer quality disruptions and greater production reliability for your operation.
Beyond traditional insect screens, Quanex delivers advanced security and pet-resistant screen solutions designed to meet evolving consumer expectations for safety, durability, and performance.
Our Fortify Security Screens, powered by Meshtec® technology, provide:
- AAMA 1901-25 rated security screen performance
- Knife shear and pry resistance
- Multi-point locking systems
- High-tensile stainless steel mesh (.8mm)
- Impact and forced-entry resistance
- UV and solar heat reduction benefits
- Factory or field installation flexibility
These high-performance systems help OEM partners differentiate their patio door and window offerings while meeting a new standard for security screens established through FGIA collaboration.
For manufacturers, this represents more than a product upgrade, it’s an opportunity to redefine the perceived value of screens in the fenestration market.
Through the Screens+™ program, Quanex provides data-driven, production-aligned screen solutions designed for seamless OEM integration. Custom-built patio door screens are manufactured to precise specifications, packaged to your requirements, and delivered in sync with your production flow.
By combining screens with our broader portfolio, including hardware, weatherseals, thresholds, and extrusion systems, Quanex simplifies sourcing and enhances system compatibility across the entire window and door assembly.
From insulating glass components and vinyl extrusion systems to high-performance thresholds, hardware, and advanced screen solutions, Quanex delivers fully integrated fenestration products designed to help you build smarter, faster, and more profitably.
Whether you’re optimizing production, enhancing product performance, meeting evolving code requirements, or differentiating your offering in a competitive market, our team is ready to support you with tailored solutions built around your operation.
This isn’t just about components. It’s about building a stronger window and door system together.