Abstract: A filter and boot combination through which air is supplied to a pneumatically operated servomotor. The boot has a cylindrical body which is fixed to the servomotor housing and an end closure which surrounds an input push rod. The boot has a first series of openings in the end closure and a second series of openings in the cylindrical body to provide a series of air flow paths into the servomotor. A first filter is located adjacent the first series of openings and a second filter has a peripheral surface which abuts the second series of openings in the boot. A chamber is created between the inner periphery of the second filter, the first filter and the push rod. The air flows in the series of flow paths through the filters and is combined in the chamber before presentation to a control valve which regulates the operation of the servomotor in response to an input force supplied by an operator through the push rod.