Abstract: A damper assembly for use in conjunction with a conventional air conditioning system. The damper assembly includes a flexible damper which has a configuration and dimension to cover the grillwork of the air conditioning system. The damper further includes a centrally located magnet which allows it to be magnetically coupled to the grillwork. When the air conditioning system is not in operation the damper is caused to cover the grillwork and thereby prevent debris from falling into the blower assembly. When the air conditioning system is in operation. the periphery of the damper is caused to blow upwardly by way of air passing through the blower assembly. When this occurs, the magnet functions to keep the damper secured to the grillwork. In this manner, the damper does not preclude air flow from the blower assembly during normal air conditioning operation.