| 摘要 |
The invention relates to a fixing frame (1) for mounting ventilation air inlet or outlet dampers to a planar structure such as a ceiling or wall panel, said fixing frame having a body of essentially cylindrical shape and being equipped at its front rim with a collar flange (3) aligned essentially orthogonal to the center axis of the cylindrical body part (2), whereby said panel is machined to have a hole with a diameter and shape essentially equal to that of said fixing frame body part, into which hole the fixing frame is inserted so that its collar flange (3) remains flush with the front surface of said panel, and said fixing frame has a threaded portion (4) projecting radially inward from the inner surface of its cylindrical body part (2) so as to permit a damper with a compatible outer threaded portion to be mounted into said fixing frame. The invention is implemented so that the cylindrical internal surface of the fixing frame (1) has at least two essentially oppositely located grooved sites (5) for alternative mounting of a wire-clip-type damper body into the fixing frame (1). |
