Kitchen Pass-Through Windows
Instantly transforms indoor kitchen counters into outdoor patio serving bars. Flush tracks and outward-folding sashes maximize interior counter workspace while creating an elegant entertainment hub.
High-Performance Window Systems
Custom Aluminum Folding Windows
Architectural Excellence
Engineered Bi-Fold Systems for Unobstructed Opening Widths
Primor Metal Door Co., Ltd. custom manufactures exterior bi-fold windows for high-end residential villas, kitchen pass-through counters, commercial hospitality venues, and coastal resorts.
Our aluminum folding window systems fold back neatly to one or both sides of an opening, maximizing airflow, natural lighting, and indoor-outdoor connectivity. Designed to withstand demanding weather conditions, each unit features heavy-duty stainless steel top-hung or bottom-rolling tracks, multi-point compression locking mechanisms, and continuous EPDM weather sealing gaskets.
- High-Grade 6063-T5 Extrusions: Premium alloy frames engineered for structural rigidity across wide opening spans.
- Polyamide Thermal Break: Low-thermal-conductivity isolation strips to meet strict energy code ratings.
- Fluid Motion Hardware: Heavy-duty quad-wheel stainless rollers ensuring smooth, effortless sash gliding.
Technical Parameters
System Specifications & Engineering Options
Manufactured to your exact architectural drawings and project specifications.
| Parameter | Standard Specification | Custom / Optional Upgrades |
|---|---|---|
| Profile Depth | 70mm / 77mm Thermal Break Frame | 88mm / 100mm Heavy-Duty Architectural Series |
| Wall Thickness | 1.8mm – 2.0mm High-Precision Aluminum Extrusion | 2.5mm Reinforced Commercial Specification |
| Glazing Type | 5mm + 12Ar + 5mm Double Tempered Low-E Insulated Glass | Triple Glazed / Laminated Acoustic Safety / Smart Tinting |
| Thermal Insulation | PA66 Polyamide Thermal Barrier Strips | Aero-Gel Enhanced Insulation Fillers |
| Hardware System | German Siegenia / Hoppe / CMECH Multi-Point Hardware | Keyed Locking Handles / Flush Concealed Locks |
| Surface Finish | Powder Coating (Matt Black, Architectural White, Bronze, Grey) | Fluorocarbon Kynar 500 PVDF / Anodized / Italian Wood Grain |
| Track Options | Standard High Weather Sill / Weather-Tight Low Profile Track | Sub-Floor Flush Track with Drainage System |
Versatile Applications
Ideal Opening Solutions for Global B2B Projects
From luxury residential villas to high-traffic commercial spaces.
Waterfront & Coastal Living
Engineered with marine-grade hardware and laminated safety glass to resist coastal salt spray, wind loads, and severe rain while providing panoramic water views when completely opened.
Commercial Hospitality & Restaurants
Enables storefronts, cafes, and rooftop lounges to effortlessly blend outdoor dining atmosphere with climate-controlled indoor space according to weather changes.
Factory Direct Partnership
Why Global Importers & Contractors Choose Primor
Complete project support from engineering design sign-off to export delivery.
100% Made-to-Measure
Manufactured strictly according to architectural CAD drawings or schedule details, preventing on-site retrofit issues.
Shop Drawings First
Our engineering team prepares detailed production shop drawings and glass schedules for sign-off before cutting profiles.
Rigorous Factory QC
Pre-assembly water-tightness testing, sash balance adjustment, and hardware smooth-operation checks performed on every batch.
Export Plywood Crating
Modularly labeled crates protected with protective film, heavy corner guards, and steel-banded plywood packaging for overseas shipping.
Technical FAQ
Frequently Asked Questions
Essential information for architects, builders, developers, and wholesale buyers considering custom aluminum folding windows.
What are the key structural benefits of aluminum folding windows?
Primor Metal Door Co., Ltd. aluminum folding windows utilize 6063-T5 high-strength aluminum alloy extrusions and heavy-duty stainless steel roller tracks. They allow maximum clear opening width while providing high resistance to wind loads, air infiltration, and water penetration.
Can folding windows be customized with thermal break technology?
Yes. Our folding windows incorporate low-conductivity polyamide thermal barrier strips to isolate internal and external aluminum frames, drastically reducing thermal conduction, improving U-factor ratings, and preventing condensation.
What sill options are available for kitchen pass-through application?
We offer flush sill, low-profile weather-sealed sill, and standard high-bottom weather tracks depending on weather exposure and interior counter height requirements.
How are custom folding window packages shipped to international sites?
All windows are fully inspected, modularly labeled by opening number, protected with foam corners, moisture barrier wrapping, and fully enclosed in export-grade plywood crates for safe container transit.