1930’s Style 4 Panel White Primed Internal Fire Door. Our range of 1920s and 1930s doors are extremely popular either in properties of that era or to provide a nostalgic appearance to newer properties. This door is engineered with solid timber cores overlaid with A grade veneers. Engineered doors are very stable and are designed to limit warping, splitting and small changes in size with the seasons. This fire door version (FD30) is pre-primed ready to hang. It features a single panel at the top and three vertical panels below for that distinctive 30s look. The 1930’s Style 4 Panel White Primed Internal Fire Door is rated FD30. And this achieves fire safety of 30 minutes for areas requiring a greater level of protection. Specialist advice should be sought on which areas require fire doors, your architect or local building control officer should be able to help.