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The HR300-1f mailbox is a classic front-entry rear-retrieval letter box for cavity wall and double-glazed projects. A modern mail delivery system with high-spec features, it is EN13724 compliant, and it offers a generous capacity of 12.7 litres within compact dimensions of just 300 x 110 x 385mm (width, height, depth). A popular choice for property developers, the HR300-1f is supplied as a complete unit and includes a 2mm panel for through-wall applications or a 24mm thermally-broken front plate for glazed installations.

    Creating a multiple letterbox bank with the HR300-1f rear access mailbox is easy. The units can be banked together with ease to meet the demands of busy postal delivery areas. Typical bank sizes include up to 30 units, although 60+ units can be supplied upon request.

    As part of our integrated service, Post Boxes UK take care of the finer details from design to delivery. We’ll produce schematic drawings to show you want your finished bank will look like, and we’ll help you maximise every inch of wall space.


    Mounting options for the HR300-1f multiple-occupancy postbox include standard through-wall installations and double-glazed panel applications.

    A stylish choice for lobby entrances and glazed shop fronts, these in-front out-back mailboxes are supplied with 24mm thermally broken panels that support the letterbox within the glazed entrance screen. With no need for further supports, they have a smart and professional finish, and they are highly resistant to everyday bumps and scrapes. Double glazed installations should only be carried out by skilled glazers to ensure optimal safety and stability.


    The HR300-1f horizontal postbox is offered in standard and non-standard RAL colours to complement both interior and exterior landscapes.


    Our standard turn-around time for the HR300-1f dual access letterbox is 4 week for custom-designed projects. We will deliver earlier wherever possible but may require additional turn-around time for larger installations of 30+ units. Call us for up-to-date information.

SKU: HR300-1f

  • Material
  • Support Legs
  • Numbering / Identificiation
  • Locking Options
  • Replacement Keys / Locks
  • Security
  • Model Range

Made to last, the HR300-1f communal letter box is manufactured in robust electro-galvanised steel and presented with a choice of high-end finishes such as satin stainless steel and powder coated polyester.

The HR300-1f door entrance panel letterbox is available with or without numbering and identification. Several areas of the mailbox can be personalised by way of engraving, and nameplate inserts are available upon request.

The HR300-1f apartment block letterbox includes a Eurolock cam lock as standard. Locking system upgrades are available upon request.

At Post Boxes UK, we understand that one set of spare keys is never enough, particularly for multiple-occupancy mailboxes. We, therefore, offer unlimited replacement keys and locks for the HR300-1f model, and discounts are available for bulk orders.

Designed for daily use in demanding environments, the HR300-1f in front out back letterbox is equipped with an anti-fishing device to restrict unauthorised access via the aperture and reduce the risk of post-theft. It is compliant with and meets the security requirements outlined by European Norm EN13724.

We can supply with the HR300-1f horizontal letter box with an integrated intercom system upon request, which includes everything from the speaker grille to the dial-up buttons. Should you already have an intercom panel or CCTV camera housing that you would like us to incorporate into the front plate of this mailbox, please contact us to discuss your requirements.

A popular choice for developers looking to install a larger unit of multiple mailboxes, the HR300-1f horizontal letter box can be specified for both through-wall and double-glazed applications. A secure rear retrieval mailbox with a long list of technical specifications, it is a safe, secure, and stylish mailbox solution for shared office blocks and communal private residences.

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