The Pre-Finished version of our Regency 4P Oak fire door range, makes things easy. They are ready to hang when they arrive! These solid core oak internal fire doors are part of a range of Pre-Finished doors, with the Prefinished Regency 4 Panel standard 35mm offering, and Richmond Oak Glazed Internal doors making up the suite. Choose from the wide range of sizes we have to allow you to fill every opening in your home. These Regency Oak 4P Prefinished fire doors are designed and manufactured to meet the latest UK Building Regulations with their FD30 rating, in preventing the spread of fire for a minimum 30 minutes.