Fire damper for ventilating fan

A fire damper and ventilating fan assembly, the ventilating fan comprising a power cord, and the fire damper comprising a shutter and a frame provided with an interior flange,

• wherein an opening is defined through the interior flange, and the frame is further provided with an interiorly mounted movable component,
• wherein said movable component includes a through groove, an elongated screw hole adjacent the through groove, and a block portion at a lower section of the movable component that extends along a length direction of said elongated screw hole;
• wherein said movable component is configured to move between a first position and a second position, wherein in the first position the power cord is inserted into the opening and is passed along a passageway formed by the opening through the interior flange and the movable component through groove, and, in the second position the power cord is not inserted into the opening, and the opening is occluded by the movable component to prevent access to the opening;
• wherein when the movable component is in the second position, the opening is occluded by the block portion;
• wherein when the movable component is in the first position, the through groove is constituted as a part of the passageway and the power cord is passed through the through groove;
• and
• wherein the movable component is a single piece, and is attached to the frame in both the first position and the second position.