China Wholesale Aluminium Bathroom Window Factory & Supplier

Featured Architectural Bathroom Window & Door Portfolio

Explore our precision-engineered fenestration systems tailored for high-humidity environments, offering structural integrity, acoustic insulation, and thermal efficiency for international architectural projects.

OUNA High Torsion Resistance Aluminum Louvre Blades Maintain Shape and Angle Under Stress for Consistent Long Term Performance

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OUNA NFRC CSA Certificates Swing Casement Window Hurricane Impact Proof Thermal Break Double Glazed Aluminum Windows With Screen

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OUNA High Quality Black Powder Coated Aluminum Casement Window Double Glazed Tempered Glass Soundproof Thermal Insulation Window

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OUNA AS2047 NFRC Simple Design Hurricane Impact Window Soundproof Double Glass Energy Efficient Aluminium Sliding Windows

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OUNA CE ISO Villa Outdoor Aluminum Alloy Low E Glass Slide Door Modern Patio Double Glazed Energy Saving Sliding Doors

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OUNA House Apartment Thermal Break Aluminium Glass Windproof Sliding Door NRFC Certification Heavy Duty Patio Sliding Doors

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OUNA French Design Premium Commercial Glass Storefront Entrance Door Aluminum Alloy Construction for Mall Hotel Use Windproof

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OUNA Adjustable Aluminum Light Shelf Louvers Directs Natural Daylight Deep Into Room While Blocking Glare for Office and Home

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Enterprise Capability & Manufacturing Infrastructure

Founded in 2015, Chengdu Zenit Window & Door Co., Ltd. operates an expansive, state-of-the-art 25,000-square-meter manufacturing facility. Backed by 11 years of deep industry expertise and 8 years of specialized global trade operations, our company generates an annual export turnover of $26 million USD. Our primary international footprint spans across North America, Australia, and Western Europe, catering directly to residential home builders, commercial architectural contractors, and Tier-1 building material wholesalers.

Quality control at Zenit is driven by an unyielding engineering methodology. Our dedicated team of 35 certified QC inspectors executes rigorous multi-stage protocols, including real-time air permeability testing, high-pressure water tightness checks, structural wind load deflection analysis, and frame corner strength evaluations. Supported by a robust network of over 600 vetted supply chain partners, Zenit delivers turnkey customization options—ranging from polyamide thermal break profiles and custom anodized finishes to triple-pane soundproof laminated glass. Our active R&D division of 42 senior fenestration engineers successfully engineered and released 50 new architectural window systems over the past year alone.

25,000 m²

Production Plant

$26M

Annual Export Sales

42

R&D Engineers

35

QC Inspectors

600+

Supply Partners

Global B2B Procurement Dynamics in Aluminium Bathroom Fenestration

Architectural specifications for modern commercial and high-density residential developments have elevated the bathroom from a purely utilitarian space into a sanctuary of wellness, acoustics, and hygrothermal comfort. Consequently, global procurement teams—ranging from general contractors in North America to facade consultants in Australia—demand aluminum bathroom window solutions that solve three critical engineering challenges: continuous moisture mitigation, absolute privacy maintenance, and stringent thermal insulation.

Multi-Family & High-Rise Projects

In multi-story residential towers, bathroom windows face intense wind pressures and thermal stress. Procuring engineered casement and tilt-and-turn systems with multi-point locking mechanisms ensures compliance with wind load deflection limits (up to 3000 Pa) while eliminating air infiltration.

Luxury Hospitality & Resorts

Five-star hotel developments require seamless integration of natural daylight with total visual privacy. Our motorized louvers and smart electrochromic double-glazed windows allow guests to alter glass transparency instantly while maintaining optimal acoustic privacy (STC ratings up to 42 dB).

Modular & Prefab Construction

Off-site modular builders require millimetric dimensional accuracy and pre-assembled flange window systems. Zenit provides standardized sub-frame assemblies optimized for rapid installation into prefabricated bathroom pods, reducing labor costs by up to 35%.

Macro Engineering Solutions: Moisture Control & Thermal Integrity

Bathrooms generate localized relative humidity levels exceeding 85%, creating severe condensation risks if cold-bridging occurs across the window frame. Zenit solves this through advanced metallurgical profile design and thermal separation technology.

1. High-Tensile 6063-T5 / T6 Extrusion Alloys

Our aluminum profiles are extruded from prime 6063-T5/T6 billet aluminum, achieving a tensile strength exceeding 185 MPa. This ensures structural resistance against warp, twisting, or mechanical failure under dynamic weather loads or high torsion louver usage.

2. PA66GF25 Polyamide Thermal Separation

To stop thermal transfer and prevent interior frame sweating, Zenit incorporates 24mm to 34mm PA66 reinforced with 25% fiberglass thermal break strips. This achieves overall window U-factors as low as 1.4 W/m²K, meeting NFRC energy codes.

3. Hydrophobic & Fluorocarbon Coatings

Bathroom environments expose window frames to acidic cleansers, soap scum, and constant moisture. Our surface finishes feature AkzoNobel fluorocarbon (PVDF) or high-durability thermosetting powder coatings compliant with AAMA 2605 specifications, guaranteeing zero corrosion for over 25 years.

4. Concealed Drainage & Dual EPDM Gasketry

Equipped with cascading stepped drainage channels and pressure-equalized weep holes, Zenit bathroom windows prevent water pooling. Cellular EPDM weather-stripping seals preserve airtightness (ASTM E283) even under severe rainstorms (water resistance up to 700 Pa).

Smart Manufacturing Plant & Precision Process Workflows

Our 25,000 m² facility integrates fully automated CNC machining lines, strip threading robotics, and multi-stage testing rigs. Explore our end-to-end manufacturing footprint below:

Raw Material Billet Storage

Thermal Strip Threading

Precision Mitre Cutting 1

Precision Mitre Cutting 2

5-Axis CNC Machining 1

5-Axis CNC Machining 2

Frame Corner Assembly 1

Hardware Fitting Assembly 2

Glass Glazing Assembly 3

Sealant Application Assembly 4

Sash & Hinge Debugging

Finished Goods Warehouse

Strip Threading Machine

Automated Heavy Cutting Machine

CNC Milling Center

Automated Assembly Line

Rigorous QC Inspection Station

Final System Debugging Rack

Architectural Tech Roadmap & Future Outlook

As smart home automation and zero-carbon building standards converge, Chengdu Zenit Window & Door Co., Ltd. continues to invest heavily in forward-looking fenestration technology through our 42-engineer R&D team.

PDLC Smart Privacy Glass Integration

Replacing traditional fabric blinds in moisture-heavy zones, our next-generation bathroom windows feature Polymer Dispersed Liquid Crystal (PDLC) double glazing. With a simple switch or voice command, glass transitions from opaque frosted to crystal clear in under 100 milliseconds.

Micro-Ventilation with Humidity Sensors

Automated louver and tilt window systems integrated with local humidity sensors. When internal moisture exceeds 70% RH, micro-actuators automatically tilt the sash by 15° to exhaust vapor, maintaining indoor air quality while preventing thermal energy loss.

Ultra-Narrow Sightline Profiles

Minimizing visible aluminum frame widths to less than 35mm without sacrificing structural wind resistance. Utilizing aircraft-grade T6 aluminum alloys, our minimalist bathroom frames maximize natural daylight while preserving structural integrity.

Global Compliance, Testing Standards & Quality Certification

To streamline international project approvals and municipal building code sign-offs, Zenit subjects all architectural window systems to rigorous third-party testing protocols prior to mass production.

North American NFRC & CSA Benchmarks

Our thermal break window series are tested in accordance with NFRC 100/200/400 standards, verifying U-factor energy ratings, Solar Heat Gain Coefficients (SHGC), and Visible Transmittance (VT). Full CSA certification guarantees structural compliance across Canadian climate zones.

Australian AS2047 & AS1288 Standards

Designed to meet Australian NCC requirements, Zenit sliding and casement bathroom windows undergo rigorous deflection, water penetration (up to 450 Pa), and ultimate strength tests compliant with AS2047, incorporating toughened safety glass under AS1288.

European CE & ISO 9001 Alignment

Manufactured under ISO 9001 certified quality systems, our products carry the CE mark under EN 14351-1, ensuring zero hazardous substance emission, superior acoustic performance (EN ISO 717-1), and long-term mechanical durability.

Hurricane Impact & Coastal Corrosion Proofing

For coastal construction in tropical storm regions, our hurricane impact window series feature PVB/SGP laminated safety glass capable of withstanding large missile impact tests (ASTM E1886/E1996) and 1000-hour salt spray corrosion tests (ASTM B117).

B2B Localization Support, OEM/ODM & Global Supply Logistics

As a global wholesale manufacturing partner, Chengdu Zenit Window & Door Co., Ltd. provides seamless supply chain solutions tailored for international project developers, architects, and building material distributors.

BIM & CAD Architectural Support

Our in-house engineering team converts architectural elevations into detailed 2D CAD shop drawings and 3D BIM (Revit) models, ensuring 100% accurate rough opening sizing and flawless structural integration.

Custom Extrusion & Color Matching

We offer bespoke profile extrusion tooling and RAL color matching services. Whether specifying matte black powder coating, timber-grain heat transfer, or protective anodizing (15-25 microns), we match any design vision.

Seaworthy Export Packaging

All window assemblies undergo 5-layer protective packaging: protective film, foam edge corner guards, waterproof wrapping, multi-layer bubble wrap, and fully enclosed fumigated wooden crates ensuring zero ocean transport damage.

Frequently Asked Questions (FAQ) for B2B Buyers

Q1: What makes aluminum the superior profile material for wholesale bathroom windows compared to UPVC or wood?

Aluminum alloys (specifically 6063-T5/T6) offer exceptional structural strength, non-hygroscopic properties, and zero warp under continuous moisture exposure. Unlike wood, aluminum will not rot, swell, or foster mold growth in high-humidity bathrooms. Unlike uPVC, thermal break aluminum maintains structural rigidity across extreme temperature swings without degrading, cracking, or discoloring under UV radiation.

Q2: How do your window systems balance bathroom privacy with natural ventilation and daylighting?

We engineer three main privacy systems: (1) High-torsion adjustable louver blades that direct airflow while obscuring sightlines; (2) Dual-glazed IGUs featuring obscure frosted, acid-etched, or fluted (reeded) glass; and (3) Switchable smart PDLC glass. Additionally, top-hung awning windows allow continuous continuous rain-proof ventilation while keeping interior spaces private.

Q3: Are Zenit window products certified for North American and Australian building codes?

Yes. Our fenestration systems hold official NFRC and CSA certifications for North America, and AS2047 / AS1288 compliance certificates for Australia. We provide complete test report documentation for air infiltration (ASTM E283), water resistance (ASTM E331), structural wind load (ASTM E330), and acoustic attenuation (STC ratings).

Q4: What is your typical production lead time and Minimum Order Quantity (MOQ) for wholesale projects?

Our flexible manufacturing infrastructure supports both commercial scale projects and custom residential builds. Standard production lead time is 25 to 35 days from shop drawing approval. MOQ depends on specification details, but standard profile orders start at 50 square meters. Custom extrusion dies require an additional 10-15 days for tooling development.

Q5: How does Chengdu Zenit guarantee quality assurance across bulk export orders?

Quality control is overseen by our team of 35 dedicated inspectors. Every window undergoes raw material spectrometer testing, corner crimping pull tests, digital dimension verification, dual sealant bead inspections, and 100% functional hinge/louver operation debugging on specialized testing racks before packing.

Q6: Can Zenit manufacture custom OEM window profiles based on client architectural drawings?

Absolutely. Supported by our 42-engineer R&D team, we offer complete OEM/ODM customization. We create custom extrusion profiles, engineer specific thermal break configurations, integrate proprietary hardware brands (such as Siegenia, Hoppe, or custom hardware), and supply customized branded packaging.

Complete Architectural Window & Glass System Lineup

Browse the remainder of our export-grade window and door systems designed for villas, hotels, commercial storefronts, and modern residential developments.

OUNA Project Engineering Double Tempered Glass Aluminum Window Heat Insulation Other Fixed Windows Picture Panoramic Window

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OUNA NFRC AS2047 Hurricane Proof Aluminum Sliding Windows Double Tempered Glass Heat Insulation Sliding Window for Villa

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OUNA NFRC Thermal Break Double Glass Energy Efficient Swing Aluminum Casement windows for House Villa Tilt and Turn Window

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OUNA Luxury Aluminum Wood Interior Door for Hotel and Apartment Projects Custom Modern Classic Styles With Professional Oem

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OUNA AS2047 Modern Slim Aluminum Double Glazed Tempered Glass Balcony Sliding Door Energy Saving Sliding Patio Doors

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OUNA NFRC Villa Terrace Aluminum Soundproof Double Glazed Glass Slide Door Energy Efficient Panoramic Sliding Doors

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OUNA CE Home Outdoor Aluminum Alloy Large View Tempered Glass Slide Door Balcony Double Glazed Sliding Doors

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OUNA Water Drainage Aluminum Louvre Profile Design Prevents Water Accumulation and Ensures Weather Resistance Outdoor

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