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Double-Hung Window

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Vallisco: Your Trusted Partner for Double-Hung Window Supplier

Vallisco manufactures double-hung windows that combine traditional looks with practical features for today’s homes, villas, and light commercial projects. Built in China with high-quality profiles and smooth-operating hardware, these windows offer great ventilation and lasting performance in different climates.

Each unit includes two moving sashes that slide vertically for steady, adjustable airflow from the top, bottom, or both sections. Easy-to-use locking systems, strong frame construction, and tilt-in panels help simplify cleaning and provide long-term everyday convenience for homeowners, contractors, and building teams.

Builders and architects around the globe rely on Vallisco’s double-hung windows for their proven flexibility, clean lines, and solid day-to-day performance in both classic and modern contemporary designs.

Custom Double-Hung Window for Your Project

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Solid Wood Composite Up-and-Down Opening Double-Hung Window

Product Specifications You Should Know

①Type & Dimensions

CategoryParameterDetails / Options
TypeSash Movement DirectionVertical counter-sliding (top and bottom sashes operable)
 Sash Balancing SystemSpiral balance / Constant force coil / Spring-tension track
 Interior AccessibilityTilt-in for cleaning / Removable sash
 Spacer Type Between SashesMulti-chamber thermal break / Sealed inner spacer
DimensionsStandard Width Range600 mm to 1200 mm
 Standard Height Range1000 mm to 1800 mm
 Sash Rail Width65 mm / 75 mm / 85 mm
 Maximum Frame Depth90 mm for double-glazed composite systems

②Materials & Performance

CategoryParameterDetails / Options
MaterialsFrame Construction MaterialFiberglass-reinforced composite / Thermally broken aluminum
 Weather Strip MaterialMulti-fin brush seal / Co-extruded rubber gasket
 Glass Spacer TechnologyWarm-edge spacer / Thermal composite edge bond
 Sash Connector SystemSnap-lock aluminum joining / Resin-injected joints
PerformanceSash Opening ForceUnder 25N for smooth vertical movement
 Ventilation Area Efficiency40%–60% of frame height depending on sash opening ratio
 Air Leakage Value≤ 0.5 m³/h·m² (Class 4 per EN 12207)
 Insect Resistance Add-onAdjustable inner screen track with mesh-lock
 Weather Test ClassificationClass A3 for water tightness / Class C4 for wind resistance

③Appearance, Automation & Other

CategoryParameterDetails / Options
AppearanceGrid Profile DesignGeorgian bar / Simulated divided lite / No grid
 Surface Finish StyleMicro-matte / Hard-anodized / Wood-effect aluminum print
 Interior Trim ProfileFlat edge / Colonial casing / Modern chamfer
AutomationLocking Mechanism TypeAuto-lock tilt latch / Dual-action sash lock / Concealed bolt
 Child Safety IntegrationVentilation stop restrictor / Removable top-sash lock
 Smart Window Upgrade OptionTilt sensor + alert / Wi-Fi status monitor
OtherTypical Use CasesTownhouses / Condos / Refurbished heritage buildings
 Eco CertificationEPD / EN 14351-1 / CE-marked glazing and framing
 Shipping StandardPre-glazed, tilt-locked, wrapped in air cell protection film

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We offer a full range of aluminium windows and doors and other window types designed for residential and commercial projects. Our products combine functionality with a modern aesthetic and can be tailored to project-specific requirements and international standards.
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Aluminum Alloy Door
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Balcony Window

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Barn Door

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Center Pivot Door

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Copper Door

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Double Door

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Entrance Door

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Fixed Window

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Folding Window

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Garage Door

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Horizontal Sliding Window

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Inward Opening Window

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Iron Door

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Primary and Secondary Door

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Outward Opening Window

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Picture Window

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Rolling Shutter Door

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Security Door

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Single Door

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Single-Hung Window

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Sliding Window

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Slim Aluminum Window

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Slim-Frame Aluminum Window

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Steel Door

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Sunroom Window

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Swing Door

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System Window

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Thermal Break Aluminum Window

Have the perfect Windows Doors Idea For Your Project?

Yes, Let's Talk

Certified Quality You Can Trust

Backed by globally recognized certifications, our factories deliver products that meet the highest standards of quality, safety, and performance.

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CE-ROHS

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CERTIFICATE SMK41054

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CERTIFICATE SMK41055

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FCC

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SIRIM QAS I

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SIRIM QAS II

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TYT CEC (ST-PRO, ST-H01)

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UL

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CMA

Your End-to-End Project Path

01 Initial Product Consultation

Discuss your industry needs, structural requirements, timeline, and function to deliver an efficient and practical solution.

02 Detailed Quote & Design

Prepare tailored technical designs with complete quotations based on your drawings, specs, and required performance.

03 Sample Confirmation & Feedback

Ship structural, visual, and material samples for review and testing to guarantee design accuracy.

04 Final Agreement & Building Start

Close on contract terms, approve final blueprints, and begin controlled in-house production matched with your project timeline.

05 QC Control & Freight Coordination

Inspect outputs thoroughly, use safe packaging, and arrange transport directly to your specified destination.

06 Full After-Delivery Support

Offer field assistance, technical consultation, and dedicated support beyond the delivery phase to support ongoing needs.

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Common Questions About Double-Hung Window

We offer traditional and modern-style double-hung windows that open from both the top and bottom. They’re great for airflow and easy cleaning from inside your space.
Yes, you can select the size, frame material, glass type, and even hardware finish. We adjust everything to match your design and energy needs.
Our frames are made from durable uPVC or aluminum, and the glass is insulated for better energy savings. Everything is built to handle harsh weather and frequent use.
Yes, double-hung windows with insulated glass and sealed frames help reduce heat loss. They’re ideal for bedrooms, lounges, and climate-sensitive rooms.
Not really. Both sashes tilt in for quick cleaning, and the materials are weatherproof and easy to care for.
We provide ongoing support, including parts replacement and technical guidance. You’ll always have someone to contact if issues come up.

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Still haven’t found what you’re looking for? Don’t hesitate to contact us. We’re available around the clock to assist you.

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Vallisco — Performance You Can See. Quality You Can Trust.