Fire Rated Letterbox Defensor FR180

(inc VAT)


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Fire Rated Letterbox Defensor FR180 3-hour rated, sets a new benchmark in fire safety and durability, making it the premier choice for multi-residential buildings such as flats and apartments. At Letterbox4you, we pride ourselves on pushing the boundaries of innovation and quality.

Key Features

  • Unmatched Fire Resistance: Tested to BS EN 1363-1:2012, the Defensor FR180 withstands fire exposure for an unparalleled 3 hours. During rigorous testing at Warringtonfire, the mailbox endured temperatures reaching 1100 degrees Celsius without showing signs of weakness or deterioration.
  • High-Quality Construction: Crafted from premium galvanized steel, our mailboxes are designed for superior durability and fire resistance.
  • Intumescent Seals: Equipped with intumescent seals that expand in high temperatures, effectively sealing gaps to block fire and smoke.
  • Anti-Theft Baffle: Features an anti-theft baffle to provide additional security against mail theft, ensuring the safety of your correspondence.
  • Optimal Design: The mailbox includes an aperture size of 230 mm x 25 mm, ensuring secure closure and fire containment.
  • Versatile Installation Options: Suitable for wall mounting, recess mounting, and free-standing setups to fit any building layout.
  • Wide Range of Finishes: Available in various RAL colours with a powder-coated finish.
  • Security and Compliance: Compliant with the Secured by Design New Homes Guide 2019, offering enhanced security features for communal areas.


Perfect for internal use in high-risk areas such as fire escape routes, apartment lobbies, and reception areas. Designed to integrate seamlessly into fire-rated walls, ensuring maximum safety and security for residents’ mail.

Additional Specifications


  • Dimensions: 126 mm (H) x 280 mm (W) x 385 mm (D)
  • Aperture Size: 230 mm x 25 mm
  • Warranty: 2 years

Testing and Certification

Our mailbox has undergone rigorous testing with Exova Warringtonfire, achieving a 3-hour fire resistance certification. This makes it the only product of its kind in the UK and worldwide. Full test reports and certifications are available upon request.