3 Pane Alunet Bifold Door
Our sleek and modern 3 Pane Aluminium Bifold Doors from Alunet are handcrafted to our customer’s specifications using our class-leading Bifold Door System.
The Aluna Aluminium Bifold Doors are engineered for elegance and performance, featuring marine-grade PAS24 security and Part L compliant U-values as low as 1.1 W/m²K when paired with triple glazing. With a DER Rating of B, these bifold doors offer outstanding energy efficiency and lasting durability. The super-slim 107mm sightlines maximise natural light and provide stunning, uninterrupted views. Perfect for contemporary homes, the Aluna system blends refined aesthetics with superior functionality — creating bright, open spaces that seamlessly connect your indoor and outdoor living.
Fancy something different? We also offer different sash options:
From £2008.98
- Warranty: 10 Year Frame Guarantee
- Estimated Delivery: 3-4 Weeks
- Free Shipping on all UK orders over £1000 (T's & C's Apply)
- Pay in Installments with Klarna
Sleek, Stylish & Versatile
- Super slim 107mm sightlines maximise glass area for uninterrupted views.
- Cutting-edge design with a wide choice of stylish finishes and colours.
- Large sash sizes up to 1200mm wide × 3000mm high per pane.
- Exceptional efficiency – U-values as low as 1.1 W/m²K (triple-glazed) and 1.4 W/m²K (double-glazed).
- Click-and-forget clip-in beads for effortless installation.
- 120kg heavy-duty wheel hardware ensures smooth, reliable operation.
- PAS24-certified marine grade aluminium for lasting security.
- Fully colour-matched to Aluna sliders, windows, and roof lights for a cohesive look.
Profile & Features
Our Aluna bifold doors feature innovative Click & Forget clip-in beads for fast, effortless installation. Designed for precision and flexibility, these beads securely snap into place—no tools or excessive force required. This clever design not only reduces installation time per pane but also delivers a satisfying “click” for complete confidence. With Aluna’s advanced profile system, installers enjoy speed, simplicity, and a flawless finish every time.
Innovative Universal Lock Keep
Our Unique Universal Lock Keep is expertly designed with fabricators in mind, offering a smarter, more efficient solution. Suitable for both left- and right-hand doors, it eliminates the need to stock separate lock keeps—saving time, space, and reducing errors. Easily adjustable with an Allen key, it features a single screw type, plastic alignment packers for quick fitting, and a wider faceplate for extra strength. Diecast back boxes and reduced hook box depth ensure seamless compatibility and reliable performance.
Colour Options for Aluna Bifold Doors
Our Aluna bifold, French, and single doors are available in any RAL colour to perfectly match your project. Standard stocked finishes include Grey 7016 (Matte), Black 9005 (Matte), White 9016 (Gloss), Grey 7016 on White 9016, Black 9005 on White 9016, Textured Grey 7016, and Mill Finish. Custom colours can also be requested for a truly bespoke aluminium bifold door design that complements any style or space.
| Configuration | 0 + 3, 3 + 0, 1 + 2, 2 + 1 |
|---|---|
| Opening Direction | Open In, Open Out |
| Frame Colour | Black, Anthracite, White, Black on White, Anthracite on White |
| Glass | Toughened Softcoat Low E (1.2 u-value), Toughened Ultra Low E (1.0 u-value) |
| Cill | No Cill, 90mm, 150mm, 190mm, 230mm |
| Threshold | Standard 55mm, Low 20mm, Low w/ Rebate |
| Trickle Vents | No Trickle Vents, 1 Trickle Vent, 2 Trickle Vents, 3 Trickle Vents |
| Blinds | No Blinds, Mechanical Blinds |
| Blind Colour | No Blinds, White, Yellow, Agate Grey, Beige, Green, Light Blue, Cream, Light Grey, Metallic Silver, Silver, Slate Grey, Anthracite, Black |
- Estimated delivery time is 2-3 working weeks.
- Our delivery times are Monday to Friday 7am – 7pm. Our driver will contact you at least 1 hour prior to arrival on the day of delivery.
- Once your order has been processed, you will receive email confirmation containing a week commencing date for delivery.
- You will be notified by email once your order has gone into manufacturing.
- On Wednesday of the week before delivery, you will receive an email and telephone call to confirm the exact delivery date.
- Should you request to delay the delivery of your order after it has been confirmed on Wednesday of the week before, this will incur a £5 per day, per door storage fee.
- We operate a one-man delivery service therefore, the driver will require assistance offloading from the van. It would be greatly appreciated if you could ensure a clear space has been made for ease of access on the day of delivery as your Bifold & Sliding Patio doors will be delivered fully assembled unless they are over 4.9metres wide or over 2.3m high or if flatpack has been requested.
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