Dust-catching filter, 30cm. 5 sheets per pack x 3 sets for ventilation fans ⭐️ I bought a lot for stock, but maybe I bought a little too much. I've made it cheaper. Please, someone use it! I've set the price low. Please refrain from asking for a discount. (_ _;) Great for the year-end cleaning! If you use it for 15cm, you can cut it and make 4 uses per sheet, 60 sheets in total with 3 sets! Great value 30cm type Toyo Aluminum Dust-catching filter Approx. 30cm x 30cm, 5 sheets per pack Fil-tan 3 sets Purchased October 2025 ❦ Just stick it on! It's a sticker-type adhesive filter that can be attached and removed, so it's easy to install like a sticker. ❦ You can freely cut it to fit the size of your ventilation fan. Uses anti-mold & antibacterial processed non-woven fabric. ❦ Comes with a replacement notification sign that appears when the filter is dirty. It will be packed in a shipping bag and sent via Yu-packet Post.