FIELD: ventilation and air conditioning.
SUBSTANCE: invention relates to ventilation of residential and industrial buildings, in particular to ventilation grating structures. In one of the versions there proposed is ventilation grid containing frame 1 with holes 2 for fastening elements of lattice attachment, lattice ribs 3 forming ventilation openings and protective device. Frame 1 is made from resilient material and in it between its holes 2 there are compressible slots 6, in which a protective device in the form of flat gate 5, jammed by slots when the elastic frame is compressed in the closed position of the gate, is movably installed, besides, the slots form an open on one side an u-shaped contour.
EFFECT: technical result is improved reliability of ventilated room protection.
5 cl, 8 dwg
