Sliding Fire Door

A sliding fire door to be attached to a wall body having an opening, comprising:

• a door body;
• and
• a guide mechanism configured to guide the door body in a sliding direction along the wall body, and
• wherein:
• the guide mechanism guides the door body slidably between an open position where the door body opens the opening and a closed position where the door body closes the opening,
• a direction orthogonal to a wall surface of the wall body is a wall-orthogonal direction, a direction orthogonal to the sliding direction in a view in the wall-orthogonal direction is a width direction, a side from the closed position toward the open position in the sliding direction is a sliding direction first side, and a side on which the wall body is disposed relative to the door body in the wall-orthogonal direction is a wall-orthogonal direction first side,
• a portion of the door body that is disposed on the sliding direction first side relative to the opening in the open position and overlaps with the wall surface in a view in the wall-orthogonal direction is a door body overlapping portion,
• the door body has an elastic fire-resistant member attached thereto,
• the elastic fire-resistant member comprises a fixing portion fixed to the door body overlapping portion and a contact portion formed in one piece with the fixing portion,
• the contact portion extends along the width direction of the door body overlapping portion and protrudes toward the wall-orthogonal direction first side relative to the door body,
• when the door body is in the closed position, the contact portion comes into contact with the wall body and closes a gap between the door body and the wall body in the wall-orthogonal direction, and
• the contact portion slides against the wall body as the door body moves in the sliding direction.