Abstract: A fire barrier apparatus includes a wall separating two adjacent spaces, extending in a predetermined plane and formed from a fire resistant material. The wall has an opening. The apparatus further includes a conveyor defining a conveyor path which extends through the opening. The conveyor has at least one conveyor element within the predetermined plane. A shutter is included within the range of the opening. The shutter is composed of fire resistant material and is movable towards the conveyor element and away from it between an open position where the opening is free and a closed position where the opening is shut off. At least part of the shutter is included in an encasing arrangement for encasing the conveyor element in the closed position of the shutter. Several embodiments are described.