This 12-inch brass letterbox is designed for straightforward installation in doors ranging from 40mm to 80mm thick. It includes an adjustable telescopic sleeve and metal flaps, offering a reliable solution for managing mail entries in domestic, commercial, or industrial settings.
The assembly features an intumescent liner that expands when exposed to heat, supporting its use in fire door installations. Brush pile draught excluders help reduce draughts and dust, while a fully sealed front plate enhances weather resistance. The identical internal and external appearance ensures a consistent look on both sides of the door.
Adjustable inner sleeves provide a secure fit for various door thicknesses
Integrated brush pile draught excluders help minimise heat loss and dust ingress
Intumescent liner designed to expand in heat, supporting fire safety applications
Two-part assembly creates a tunnel effect for easier installation
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