French Doors Manufacturer
K80 aluminum double casement doors built for large openings and demanding climates.
French Doors Built for North American Projects
WANJIA Hiseng is a french doors manufacturer that supplies builders, dealers, and architects across North America. The K80 large entrance aluminum double casement door is designed for front entries, exhibition centers, and conference rooms where a wide clear opening matters. The frame uses a 35.3 mm multi-chamber thermal break to reduce heat transfer and keep the door stable in changing weather.
The standard glazing is 5+16A+5+12A+5 triple glass, which brings the thermal rating down to Uw 1.4 and sound reduction up to Rw 37. That combination suits projects near busy streets or in regions with strict energy codes. You can also specify 8+27A+8 glass for larger sightlines or a different look.
Hardware starts with Kinlong as the standard configuration. Hoppe, Cmech, VBH, and G-U are available as options. Every door is made to order, so you can match the finish, grille pattern, and built-in blinds to the project.
K80 Double Casement Door Specifications
Key values for the standard K80 aluminum double casement door.
| Thermal performance | Uw 1.4 W/m²K |
|---|---|
| Sound reduction | Rw 37 dB |
| Standard glazing | 5+16A+5+12A+5 triple glass |
| Thermal break | 35.3 mm multi-chamber |
| Standard hardware | Kinlong |
| Optional hardware | Hoppe, Cmech, VBH, G-U |
| Built-in blinds | Manual, magnetic, or electric |
| Lead time | 25-30 business days |
Final values depend on glass selection, hardware, and door configuration.
Why Specify These French Doors
Details that matter on large entrance doors.
Thermal Break
A 35.3 mm multi-chamber thermal break separates interior and exterior aluminum, cutting heat loss and condensation risk.
Triple Glazing
5+16A+5+12A+5 glass keeps Uw at 1.4 and Rw at 37 dB, a strong combination for cold or noisy sites.
Hardware Choice
Kinlong comes standard. Hoppe, Cmech, VBH, and G-U are available for projects that require a specific brand.
Built-in Blinds
Manual, magnetic, or electric blinds sit inside the glass, reducing dust and maintenance in high-traffic entries.
From Factory to Job Site
WANJIA Hiseng builds these doors at a factory in Foshan, China, with CNC machining centers and automated assembly lines. The company exports to more than 80+ countries, with a strong focus on the North American market. Each order is packed in a wooden box or frame and shipped with a tracking number. You can expect a quote within 3 hours after sending project details.
Installation support comes as videos, written guidance, and remote assistance from the technical team. There is no on-site crew, so your local installer handles the physical work. Warranty depends on the specific product and contract terms. For builders and dealers, this keeps the process straightforward and the paperwork clear.
K80 French Doors in Detail
Compare with Other Door Types
If a double casement door is not the right fit, these series cover other opening styles.
- Folding Patio DoorsAluminum folding doors in 68, 75, 80, and 88 series for wide openings that stack to the side.
- Aluminum Clad Wood DoorsAluminum clad wood sliding doors with American oak interior and ROTO, SIEGENIA, or CMECH hardware.
- Aluminum Sliding Door Manufacturers170 series lifting and sliding doors and narrow-frame sliders for large glass panels.
Questions buyers ask
What makes a good exterior french door manufacturer?
Look for a manufacturer that publishes thermal and acoustic values, offers trusted hardware brands, and can handle North American export requirements. WANJIA Hiseng lists Uw 1.4, Rw 37, and Kinlong as standard on the K80 double casement door, with lead times of 25-30 business days.
Can these French doors be used as exterior entry doors?
Yes. The K80 large entrance aluminum double casement door is built for exterior use. The 35.3 mm thermal break and triple glazing help it perform in cold climates, and the aluminum frame resists warping better than wood in wet or humid conditions.
What hardware comes standard on your French doors?
Kinlong is the standard hardware brand. If your project specifies Hoppe, Cmech, VBH, or G-U, those can be substituted. All brands are sourced directly and installed at the factory before shipping.
Do you offer unequal double casement doors?
Yes. An unequal double casement door uses one large and one small leaf. That model has Uw 2.6, Rw 32 dB, and 5+19A+5 double glazing. It works well for entries where you want a primary walking leaf and a secondary leaf that stays closed most of the time.
Get a Quote for French Doors
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