The Filter Fans of series D out of UV plastic (PC/ABS Colour RAL 7035) are designed for environments, where the forced cooling with the ambient air is sufficient for the cooling of electronical components. The mounting could be done either with the built-in clips or with screws. The change of filter can be done anytime without any tool from the front side. If mounted correctly, the enclosure protection grade of up to IP54 is obtained.