Ventilation grid for rooms, offices, etc. has elastic deformable round body for mounting inside ventilation tube and is a cast plastic part

摘要

A room is ventilated by a tube passing through a wall, with an air intake on the room side and air flap with grid on the other side. The grid has a round body for mounting inside the tube, and is at least partially elastically deformable. The body has a perforated part (9) fastened to it to form the grid, a long hand grip (10) on the side facing the room interior, and radially deformable elastic arms (7). The grid is a cast plastic part.