A letter box is the opening in a door designed to take mail into your property. Often referred to as letter boxes or letter plates, they come in many different colours and sizes. In the modern day the most popular types are uPVC letter boxes. Through years of use they often become worn out or broken requiring you to look for a replacement uPVC letterbox.
Letterboxes usually come in three sizes- 10 inch, 12 inch and 12 inch slimline. If you take out your existing letterbox you will be able to see whether you need a midrail type letterbox or a panel style letterbox.
The midrail of a front door is the horizontal frame across the middle of the door. Letterboxes fitted through midrails are usually between 40-80 mm. Alternatively letterboxes fitted through panel style doors are usually 20-40 mm. Panels are usually glazed in to the door.