This part of ISO 7750 specifies the essential dimensional characteristics necessary for interchangeability of filter elements for air filters generally used in commercial vehicles.
Two element types, C and D, are specified, which differ in their design and which require different installation conditions (see annexes A and B). Types C and D are not interchangeable.
The selected sizes specified in tables 1 and 2 are based upon popul?r elements currently on the m?rket
This part of ISO 7750 may be used for other air filter applications where no specific standards exist.