Discover Saildoor®
the innovative limitless hangar door.
The unique vertical-lifting fabric door patented and engineered to meet any dimension, environment, or challenge from massive aerospace and shipyard hangars to demanding industrial facilities.
Designed with
purpose, patented
for a smarter, modular
closure system.
Saildoor combines modular engineering with a patented closure system to simplify industrial openings at every stage. Its unique design requires no internal trusses (heavy reinforcing frames within the PVC sheet) or mullions (intermediate pillars), regardless of the door dimensions, allowing for unobstructed spans, easy installation, and seamless operation. Every component is engineered to reduce complexity while enhancing performance, making large-scale closures faster, safer, and more efficient.
Unlimited dimensions
Saildoor adapts to virtually any width or height thanks to its fully modular design, covering even the largest industrial openings without structural limitations – unlike traditional doors that require internal trusses or intermediate mullions.
Fast opening & closing
Saildoor’s quick opening and closing improves operational efficiency while reducing air exchange, limiting temperature fluctuations, and helping maintain energy-efficient, controlled environments.
Built to endure. Certified to perform.
Saildoor stands alone in its class: the only fold-up door system certified EN 12424 Class 5 without internal trusses and mullions. Certified by the Italian Certification Body, Istituto Giordano, and field-tested, it guarantees exceptional resistance to wind loads, thermal shock, and extreme environments from aerospace facilities to coastal ports.
Class 5 wind resistance
Saildoor stands out for its exceptional resistance to extreme wind conditions. Certified according to EN 12424 Class 5 and EN 12444 sec. 7.1 which certifies the resistance of the whole structure, it’s the only high-speed fold-up door to achieve this level of performance without internal trusses or mullions.

Resistance to
thermal shock and harsh environments
Engineered with durable materials and robust modular construction, Saildoor endures extreme temperature variations, UV exposure, and corrosive conditions. Its long-term performance is guaranteed even in the harshest industrial or coastal environments.
In-House Demonstration & Testing
At our Montirone facility, we have a full-scale Saildoor permanently installed, serving as both a demonstration unit and a testing environment. Visitors can experience the door firsthand, observing its high-speed operation and assessing its performance. Our dedicated setup allows us to simulate wind loads up to the maximum certified level, Class 5, providing a tangible demonstration of Saildoor’s resilience. The in-house testing system is officially certified by Italian Certification Body Istituto Giordano, underlining our commitment to verified quality and reliability.
Safety integrated into every motion.
Saildoor goes beyond standard safety measures. Its anti-fall mechanism, dual-chain drive system, and blackout-ready technology ensure secure operation in all conditions.
By keeping all mechanical components at ground level, maintenance is safer and more efficient, protecting both people and equipment.
- Continuous operation during power outages
- Dual-chain drive system for added security
- Limit switches
- Ground-level maintenance
Faster setup. Easier logistics.
From factory to installation, every phase is optimized for speed and efficiency. Saildoor’s modular design simplifies transport, reduces labor time, and ensures rapid on-site assembly, even for the largest door openings. Fully demountable and re-installable, it’s ideal for both permanent and temporary facilities.
Quick and easy installation
Modular components and optimized design ensure rapid assembly on-site, saving time and labor for even the largest industrial openings.
Simplified and quick transport logistics
Lightweight, modular panels simplify transportation, cutting costs and time, while making delivery and handling faster and more efficient.
Lower maintenance costs
With all mechanical components at ground level, maintenance is safer, faster, and more economical over the door lifetime.
Fully demountable and re-installable
Saildoor can be fully dismantled and reassembled with ease, ideal for temporary installations or future expansions.
A stronger door. A lighter footprint.
Saildoor combines durability and efficiency for long-term sustainability. Its high-strength to weight, long-lasting structure minimizes material waste, transport fuel, and replacement parts, reducing both environmental impact and operational costs.
- Lower material waste and emissions
- Extended product lifetime
- Fewer replacements and repairs
- Reduced transport energy
Custom solutions
with full turnkey support, engineered for your project.
Every project is unique, and so is every Saildoor. From design to installation, our technical team works closely with architects, engineers, and builders to deliver a fully customized, turnkey solution.
Thanks to Apostoli Daniele’s consultative approach, clients receive comprehensive support at every stage from the first sketch to final installation ensuring precision, reliability, and peace of mind.
Custom-engineered solutions
Every Saildoor project is tailored to your needs. From initial concept to commissioning, our technical team ensures the closure system fits perfectly, whether for new constructions, existing buildings, or complex retrofits.
Full turnkey support
Thanks to Apostoli Daniele’s consultative approach, clients receive expert guidance at every step, including co-design, technical consultancy, and complete project management, for a seamless, worry-free experience.
Detailed technical specifications
This section provides the full technical documentation of Saildoor, including materials, structure, performance, and safety systems. Access comprehensive specifications and optional features to understand the design, capabilities, and engineering behind each door, 100% made in Italy with premium components for long-lasting quality and reliability.
Versatile by design, reliable across every industry.
Saildoor is the preferred choice for industries that demand reliability, safety, and performance on a large scale.
From hangar manufacturers to engineering firms, every stakeholder finds in Saildoor a system engineered for real operational needs – modular, certified, and ready to integrate into any project.
Its versatility and turnkey approach make it the ideal choice for both new constructions and retrofit applications.
Aerospace & Aviation
Hangars and maintenance facilities where fast and safe access is critical.
Shipyard & Maritime
Commercial shipyard and naval shipyard, with standing harsh weather and high wind loads.
Industrial & Manufacturing
Factories, warehouses, and production areas requiring robust and efficient closures.
Mining & Heavy Industry
Sites with extreme environmental conditions needing durable, high-performance doors.
Defense & Government
Secure facilities with strict operational and safety requirements.
MRO & FBO
Aircraft maintenance, repair, and private aviation ground services.