The all rounder when it comes to skirting - the Bullnose design keeps it simple and works with all styles of interiors. The picture shows a skirting that is 150mm tall and 18mm thick. It's manufactured from MDF (moisture resistant). The size is 195mm in height, 18mm in thickness and 4200mm in length. No matter what size height you choose, the Bullnose will always remain the same size - it does not change to suit the height of the board.