CADRE POUR LE MONTAGE D'UN VOLET DE DESENFUMAGE

摘要

The frame (1) has a section (5) including a distal portion (5a) and a proximal portion (5b), where the distal portion is intended to be inserted into an opening of an air duct (3). The proximal portion of the section includes a plaster-receiving surface intended to be positioned such that the surface extends on plane surface of a wall in which the opening is provided, where the diameter of the proximal portion is less than the diameter of the opening. The proximal portion includes a reference edge for the application of plaster on the plaster-receiving surface. An independent claim is also included for a smoke ventilation installation.