Abstract: A grease filter assembly is provided for absorbing airborne grease discharged from a grease discharge vent extending from a roof. A support is mountable to the duct of the grease discharge vent and grease absorbing pads are supportable upon the support frame in stationary position surrounding the discharge vent and in spaced relation from the roof. A fireproof barrier is disposed between the grease absorbing pads and the roof. Additionally, one or more hinges may be provided to allow the grease discharge vent to be easily opened for cleaning and maintenance.