1. Improved Filtration: These 2 grease filters for range hood feature 5 layers of aluminum mesh, improved filtration and help your range hood maintain optimal performance. 2. Regular Replacement: To ensure the optimal performance of your range hood and eliminate unwanted odors, it is recommended to replace the metal grease filter every 3 6 months. 3. Compatibility and Size: These filters are specifically designed for most brands and models of range hoods and cooker hoods. Dimensions: 30 cm x 25 cm, please check the gallery images for the correct fit for your range hood. 4. Material: Made of aluminum mesh, these filters are washable and designed for long term use. They are built to withstand the rigors of regular cleaning and use.