Why Choose Folding Patio Doors
Folding patio doors turn a wall into an opening. Panels slide along a track and stack against the jamb, so the threshold between inside and outside nearly disappears. This works well for patios, decks, and rooms that open to a yard or courtyard.
The frames are aluminum. That keeps the panels light enough to move by hand, yet strong enough to hold large glass units. A bottom sliding system can bear up to 400 KG, which matters when you spec tall or wide panels.
WANJIA Hiseng builds these doors in 68, 75, 80, and 88 series. Each series suits different sizes and performance targets. You choose the panel count, swing direction, finish, and hardware.
What to Expect from Our Folding Patio Doors
Standard features cover the frame, glass, hardware, and movement.
Reinforced Aluminum Frame
Profiles use 2.0 mm aluminum with 2.2 mm local reinforcement on the 88 series. This keeps panels straight under repeated use.
Tempered Insulated Glass
Standard glazing is 5+27A+5 tempered insulated glass. Other options include low-e, laminated, and argon filled units.
Trusted Hardware Brands
Kinlong is standard. Hoppe, Cmech, VBH, and G-U are available. Multi-point locking comes with the hardware set.
Wide Panel Range
Sash width runs 500-900 mm and height 1900-3000 mm on the 88 series. Other series cover different opening sizes.
Folding Patio Door Specifications
Key numbers for the aluminum bifold patio door range.
| Series | 68 / 75 / 80 / 88 |
|---|---|
| Frame material | 2.0 mm aluminum |
| Local reinforcement | 2.2 mm |
| Sash width | 500-900 mm |
| Sash height | 1900-3000 mm |
| Standard glass | 5+27A+5 tempered insulated |
| Bottom sliding capacity | 400 KG |
| Thermal performance | Uw 2.0-3.5 W/m²K |
| Sound reduction | Rw 35-40 dB |
Final values depend on the series, glass package, and hardware configuration.
Other Door Types from WANJIA Hiseng
If folding doors are not the right fit, these product lines may work.
Built for North American Projects
Builders and dealers often ask about performance and lead time. The 88 series aluminum folding door is ENERGY STAR certified. That gives you a documented baseline for thermal and structural quality when you present options to clients. Our team can also provide NFRC and CSA documentation for the relevant product lines.
We ship from Foshan, China to ports across North America. Lead time is usually 25-30 business days, depending on the design, materials, and order volume. After the goods arrive, you get installation videos and guidance. Our technical team can help with measurement questions before you order. Warranty depends on the specific product and contract terms.
Questions buyers ask
Are foldable patio doors suitable for wide openings?
Yes. The bottom sliding system can bear up to 400 KG, and the 88 series supports sash widths of 500-900 mm and heights of 1900-3000 mm. You can combine multiple panels to cover a wide opening. The frame uses 2.0 mm aluminum with 2.2 mm local reinforcement to keep the panels stable.
What is the sound reduction on folding sliding glass patio doors?
The aluminum bifold patio door range has a sound reduction of Rw 35-40 dB with standard 5+27A+5 tempered insulated glass. Actual performance depends on the series and glass package. If you need higher sound control, ask about laminated glass options.
Can bi folding outside doors be used in cold climates?
The thermal performance is Uw 2.0-3.5 W/m²K depending on the series and glass. The 88 series is ENERGY STAR certification-backed. For colder regions, consider argon filled glass or a series with a lower Uw value. We can provide NFRC data for the relevant configuration.
How much do aluminium bifold exterior doors weigh?
The bottom sliding system can bear up to 400 KG. That covers most residential and light commercial panel configurations. The actual weight depends on panel size, glass thickness, and hardware. Our technical team checks the load calculation before production.
Get a Quote for Your Project
Send your opening size and panel count for a quote within 3 hours.