This Cooker Hood Replacement Grease Filter will stop grease particles entering the motor and ducting*. The modern natural rayon and cellulose Cooker Hood Replacement Grease Filter even has a saturation indicator to let you know when it needs changing. The Grease Filter is made from natural rayon and cellulose fibres which absorb 80% of fat according to the DIN Norm while the polyester non-woven cheaper alternative filters have only a fraction of that property. Pack contains: 1 x Grease Filter. Size: approximately 114 x 47cm (22 x 18.5in). Simply cut to size.