| 摘要 |
A heating or air-conditioning system for the interior of a motor vehicle, is provided which has an exchangeable air filter comprising two mutually adjoining filter sections, surrounded peripherally by a holding frame. For the insertion of the filter, the first filter section is initially fed in through an assigned opening and is then displaced sidewards into its working position and the second filter section is only then inserted. Two identical filter sections are used to increase the sealing effect, the mutually adjoining longitudinal sides of which, upon the second filter section being fed in, are connected by means of a tongue-and-groove joint, extending along the top of said longitudinal sides or alternately over half their length, into a mutually adjacent position. Guide devices ensure that the filter sections slide onto the holding frame.
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