HMHAMA Filter can maintain the cleaning performance of the vacuum cleaner while reducing the penetration of dust, pollen and other allergens into the air you breathe. Replacing the accessories regularly will also improve the cleaning performance and suction of your vacuum cleaner, to keep the vacuum cleaner running at peak performance. It is recommended to replace the filter every 2 to 3 months, which can provide you and your family with a comfortable, clean and healthy living environment. Suitable for LG CordZero A9 vacuum cleaner. If you have any questions, please contact us, we will solve the problem for you in time. Specification:Quantity: 1/2 PCS(Optional)Function: filter fine dustWeight: about 14g (1 PC)Packing includes:1/2 x Filters(PCS)