Here at Windoor our uPVC Letterboxes - Non-Rattle & Weatherproof are available in 10 inch and 12 inch sizes including Slimline and the more expensive Deluxe Letterbox. Replacement uPVC letterboxes and letterplates to suit uPVC type doors (can also fit wooden and aluminium doors).
These letter boxes all have an integral sleeve that lines the inside of the postal slot. These letter boxes are all covered by mechanical guarantee. The letterboxes we show are the best sizes available to fit all known uPVC door letterboxes