The premdor steamed beech internal fd30 fire door has a solid core and is ideal for replacement use or high quality new build applications the door faces are fully factory laquered and veneered edge to edge masking the applied vertical edge lippings and presenting a clean smooth appearancethis 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 t