French Doors Manufacturer
Large entrance aluminum double casement doors built for North American openings.
French Doors from a Dedicated Manufacturer
WANJIA Hiseng manufactures French doors as part of its aluminum door range. These are large entrance double casement doors, not interior passage doors. The K80 series uses a 35.3 mm multi-chamber thermal break and triple glazing to reach Uw 1.4 W/m²K and Rw 37 dB. That performance suits front entries, patios, and commercial openings where thermal comfort and sound control matter.
The standard hardware is Kinlong, with Hoppe, Cmech, VBH, and G-U available as options. Glass starts at 5+16A+5+12A+5 triple glazing and can go up to 8+27A+8. Built-in blinds are offered in manual, magnetic, or electric versions. Each door is made to your opening size, not pulled from stock.
As a French doors manufacturer, we handle OEM and ODM orders for builders, dealers, and architects. You get a quote within 3 hours after sending project details, and production takes 25-30 business days. We ship worldwide, with a focus on the North American market.
K80 French Door Specifications
Key performance values for the standard K80 large entrance aluminum double casement door.
| Thermal transmittance | Uw 1.4 W/m²K |
|---|---|
| Sound reduction | Rw 37 dB |
| Triple glazing | 5+16A+5+12A+5 |
| Thermal break | 35.3 mm multi-chamber |
| Standard hardware | Kinlong |
| Optional hardware | Hoppe, Cmech, VBH, G-U |
| Glass options | Up to 8+27A+8 |
| Blinds | Manual, magnetic, electric |
Exact values depend on glass, hardware, and size configuration.
What You Get with K80 French Doors
Four reasons builders and dealers specify this door for North American projects.
Thermal Performance
A 35.3 mm multi-chamber thermal break and triple glazing hold Uw at 1.4 W/m²K. This reduces heat loss in cold climates and heat gain in warm ones.
Sound Control
Rw 37 dB means the door cuts outside noise. That helps on busy streets, near schools, or anywhere quiet matters inside.
Hardware Flexibility
Kinlong comes standard. Hoppe, Cmech, VBH, and G-U are available if your client prefers a specific brand or handle style.
Custom Sizes
Doors are made to your rough opening. No stock sizes, no compromises. Send dimensions and we quote within 3 hours.
Built for North American Openings
North American homes often have wide entryways and patios that need a door with real presence. The K80 double casement design opens both leaves fully, giving you a clear passage without a center post. That works well for moving furniture, hosting gatherings, or connecting a living room to a deck. The aluminum frame stays straight in humid or coastal conditions, and the thermal break prevents condensation on the interior side.
For projects that need a smaller active leaf, we also make an unequal double casement version. That door uses 5+19A+5 double glazing and reaches Uw 2.6 W/m²K with Rw 32 dB. It keeps the same hardware options and customization choices. Both versions accept grilles, custom colors, and built-in blinds. Tell us your opening size and we will recommend the right configuration.
K80 French Door Details
Other Door Types We Manufacture
If French doors are not the right fit, consider these aluminum options from the same factory.
- Folding Patio DoorsAluminum folding doors that stack to the side and open up wide walls.
- Aluminum Clad Wood DoorsAluminum clad wood sliding doors with a warm interior and tough exterior.
- Aluminum Sliding Door ManufacturersAluminum sliding door manufacturers with lifting and sliding options for large glass.
- Bi Fold Patio DoorsBi fold patio doors with multiple panels and smooth bottom rolling systems.
French Door Dimensions: How to Size Your Opening
- 01Custom Sizing And Rough Opening
French doors are not a stock item here. You send the rough opening, and the unit gets built to it. That applies to the K80 large entrance aluminum double casement doors and to the unequal double casement version. Get the opening numbers right before you ask for a quote.
- 02Measuring Width And Height
Width: measure at the top, middle, and bottom. Height: measure at the left, center, and right. Take the smallest figure each time. Framing is rarely dead square, and the smallest number is what keeps you out of trouble on install day. Replacing an existing unit? Measure the frame opening once the old door is out. The old slab tells you nothing useful.
- 03Leaf Split And Glass Specs
How the two leaves divide the opening is the next call. An even split suits a front entry where both leaves get used. If one leaf does the daily work and the other mostly stays put, specify the unequal double casement. It runs 5+19A+5 double glazing, Uw 2.6 W/m²K, Rw 32 dB. The standard K80 runs 5+16A+5+12A+5 triple glazing, Uw 1.4 W/m²K, Rw 37 dB. Send rough opening width, height, and jamb depth, plus wall type and swing direction. Minimum order is 2 square meters. Quotes go out within 3 hours of getting project details.
Questions buyers ask
What makes a good exterior French door manufacturer?
Look for a manufacturer that states thermal and acoustic performance clearly. Our K80 French door has Uw 1.4 W/m²K and Rw 37 dB with triple glazing. Check hardware brands, customization options, and lead times. We use Kinlong standard and quote within 3 hours.
Can I get French doors in custom sizes for a North American home?
Yes. We make each door to your rough opening. Send width, height, and jamb depth. Our technical team reviews the details and confirms the configuration. Minimum order is 2 square meters.
What glass options are available for these French doors?
Standard is 5+16A+5+12A+5 triple glazing. You can upgrade to 8+27A+8 for larger panes. Built-in blinds come in manual, magnetic, or electric versions. Low-e coatings and tempered glass are also available.
Which hardware brands can I specify?
Kinlong is standard. Hoppe, Cmech, VBH, and G-U are optional. Tell us your preferred brand and finish. We install the hardware at the factory before shipping.
What is the difference between rough opening and door size for French doors?
The rough opening is the framed hole in your wall. The door unit comes slightly smaller so it can be shimmed, leveled, and sealed during installation. Give us the rough opening, not the finished door size. Measure the old door slab and the new unit may not sit right in the frame.
Can I order French doors for a non-standard opening width?
Yes. Every K80 door is made to your rough opening, so odd widths are normal. Send the width at the top, middle, and bottom, and use the smallest number. We confirm the configuration before production. Minimum order is 2 square meters.
Get a Quote for French Doors
Send your opening sizes and get a quote within 3 hours.