Folding Door (35mmMiddle Mullion)

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The 35mm Folding Door is crafted for those who appreciate minimalism and modern aesthetics. Featuring an ultra-slim middle mullion, this system maximizes natural light and creates an open, seamless connection between indoor and outdoor spaces. Despite its sleek profile, it maintains excellent performance in smooth operation and sealing — perfect for contemporary homes, cafes, and showrooms seeking elegance with functionality.

Key Features

Flexible Folding Design

One system can achieve both inward and outward opening configurations for versatile use.

Effortless Operation

Smooth, stable movement ensures easy and quiet operation.

Modern Aesthetic Appeal

Sleek lines and minimalist frames enhance architectural beauty.

Wide Range of Frame Sizes

Available door leaf widths: 440 / 442 / 431 / 330 / 220 mm.

Enhanced Sealing Performance

Equipped with high-quality EPDM weather seals to improve airtightness and waterproofing.

Specifications

Material: 6063-T5 Aluminum Alloy

Surface Treatment: Electrophoresis, Powder Coating, or Anodized Finish

Hardware: Reliable Chinese or imported double linkage folding system

Glass Options: Single or Double Tempered Glass

Sealing: Single glazing or double glazing (insulated glass unit)

Performance Ratings

Maximum Thermal Insulation: Level 6

Maximum Sound Insulation: Level 6

Maximum Wind Resistance: Level 9

Air Tightness: Level 7

Applications

Perfect for villas, balconies, gardens, restaurants, and office partitions — anywhere that benefits from large, openable views and smooth indoor-outdoor transitions.

Model Code Thickness(Tmm) Theoretical Weight(kg/m)	Screenshot	Model Code Thickness(Tmm) Theoretical Weight(kg/m)	Screenshot	Model Code Thickness(Tmm) Theoretical Weight(kg/m)	Screenshot
QC5501 Upper Slide T=1.8 1.884kg/m		QC5501A Upper Slide T=1.8 1.788kg/m		QC707 Transmission Bar T=2.4 0.193kg/m
QC703F Frame T=1.3 0.741kg/m		QC708F Lattice Bar T=1.3 0.695kg/m		QC5503 Bottom Track (Pre-embedded) T=1.8 0.407kg/m
QC46 35Door Leaf T=1.5 0.879kg/m		QC5509 Glass Bead (19mm) T=0.8 0.092kg/m		QC710 Bottom Cover T=1.1 0.235kg/m
QC705 Mullion T=1.7 1.086kg/m		QC056D Glass Bead (24mm) T=1.0 0.063kg/m		QC5504 Lower Slide with Edge Stop T=1.6 0.771kg/m
QC706 Sash Cover T=1.1 0.202kg/m		QC4508 Glass Bead (8mm) T=0.7 0.099kg/m		QC056 Glass Bead (12mm) T=0.6 0.071kg/m
QC5502 Flat Bottom Slide T=1.8 0.629kg/m

Why Choose Our Folding Doors

As a professional aluminum doors and windows manufacturer, we provide full customization for size, color, glass type, and opening direction. Enjoy factory-direct pricing, OEM/ODM service, and global shipping for your projects.

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