Our concertina door, the Trellidor A300 is a fully framed expandable security barrier constructed with a unique trellis within a securely anchored frame, suitable for expandable applications where access is required. This design creates the strongest physical and formidable deterrent, preventing the burglar from gaining entry.

Each Trellidor concertina door is custom designed to secure any door, window or passage opening without compromising aesthetic architecture, integrating lifestyle by easy operation, build quality and flow of air and light.

Trellidors are top hung to ensure a smooth operation with low friction and minimal maintenance and is made of galvanized steel, powdercoated with a unique patented lock system. Trellidor’s expanding grilles stack away neatly to 12% of the original size to optimize space. Trelidor concertina doors are available in a wide variety of Dulux powder coat colours. Standard colours are: white & black. To select colour and style options to suit your needs view concertina door photos.

Trelidor A300 Residential Applications:

• front doors
• back doors
• patios
• passageway
• windows

Trelidor A300 Commercial Applications:

• retail security
• shopfront security
• service counters
• access routes
• computer server rooms

The Trellidor A300 concertina door comes with a unique 10 years guarantee.

Please contact us with questions regarding our concertina doors are any other Trellidor security products.

For Trellidor A300 technical specifications click on the PDF icon.