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Dust Removal Filter, Set of 3 x 2, Oriental Aluminum, For Ventilation Fans, Approx. 11.8 x 11.8 inches (30 x 30 cm), Antibacterial and Mildew Resistant Ventilation Fan Filter (Dust Removal Filter) Simply stick it on to reduce the hassle of cleaning the dust; 24 hours of ventilation, the bathroom, or dressing room will become dusty and cleaning when it becomes a lot of hard to clean. Just stick this filler to remove dust filter, so you can cut it with scissors to fit your home with just stick it on and it can be cut to a size of 11.8 inches (30 cm) to fit your fan size.