Advantages: filter odors, keep the air fresh, clean and breathable. The filter with foam design is easier to capture fine particles and odors in the air, making our breathing easier. Instructions for use: 1. Open the front panel of the air conditioner. 2. Take out the filter, put the air conditioner filter cotton into the filter frame, and then insert the filter into the slot. 3. Close the air conditioner cover. Application: Air filter foam is mainly used in purification equipment such as air conditioners, home air purifiers, and car air purifiers. It can isolate dirt and dust in the air, such as small particles of dust, lint and pet hair in the air. Note: 1. Please confirm the size of the air filter foam before purchase. 2. It is best to replace the filter and check it every 1-2 months to its cleaning effect. Colour:Black Material:sponge Package Contents: 20 x Air conditioning filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.