Bespoke 4 Panel Bifold (4 Astragal Bars)

Our slimline aluminium bi-folding doors with astragal bars have been meticulously designed to cater to diverse budgets and tastes, offering unparalleled strength, durability, and aesthetic appeal. Crafted from premium-grade aluminium, our bi-folding doors boast a sleek and minimalist design that doesn't compromise on robustness or practicality. Lightweight yet incredibly strong, aluminium facilitates the slimline profile of our doors, making them easy to manoeuvre and virtually maintenance-free.

Our aluminium astragal bifolds feature slim thermally broken profiles, ensuring expansive views and optimal thermal performance. With glass accounting for 80% of the surface area, we prioritise glass specification to enhance thermal efficiency. Experience unrivalled insulation and comfort with our advanced polyamide thermal barrier technology. This innovative profile technology creates a barrier between the external elements and your interior, retaining heat, reducing condensation, and buffering against external noise.

Quality, compliance, and security are non-negotiables for us. That's why we manufacture and assemble all our products in the UK, utilising state-of-the-art machinery and highly qualified staff to ensure perfection with every door that leaves our factories. Tailored to your specifications, our doors can be customised to fit your unique requirements. If you have a specific size or design option in mind, our consultations team is just a call away at 0203 355 5311, ready to assist you every step of the way.

• Size: (W) 2400mm – 4800mm (H) 2600mm – 3000mm
• U Value: Double Glazed 1.6 W/m2K, Triple Glazed 1.4 W/m2K
• Guarantee: 10-year warranty on factory power coating and 12 months warranty on hardware comes as standard

We at Glass Openings will carry out deliveries manufactured by us and will be free for orders that are over £1200.00. Any orders under £1200.00 will incur a delivery charge based on location.

Lead times stated at the time of ordering are not final. All delivery times are from the date we receive a finalised order, online or e-mail and when payment is made in full. Any modifications to the order will more than likely result in a delay to the delivery.

The delivery term varies by product.

Customers have a legal right to cancel orders up to seven days after the order has been placed and can receive a full refund. This statutory period of seven days does not apply on all products as the return and cancellation policy varies by product categories. As the Glass Openings store offers both bespoke and stock items, please read carefully to determine what return and cancellation policy is associated with the product you are ordering.

Please find more information on our Delivery Information & Returns and Cancellation Policy pages.

For technical downloads and product installation manuals, please visit our Downloads page.