Thepremdor 4 panel oak fully finished internal fire door is a classic four panel oak veneer door with an fd30 fire rating raised and fielded panels provide depth and definition to the door and is supplied fully finished with 3 part polyurethane coating for lasting protectionthis door provides 30 minutes of fire protection when hung in accordance with the manufacturers instructions in an appropriate frame with intumescent strips in the jambs and head or top and long edges of the door click o