Filtan Allergy Block Filter PM2.5 compatible 2 sheets

●A filter that prevents dust from accumulating in the air vents in your room. ●Catches fine particulate matter, allergens, and even PM2.5 in the air! ●Uses static electricity to catch fine particles that enter your room through the air vents. ●Since it is an adhesive type filter, it can be easily installed like a sticker. ●Perforations make it easy to cut to fit the size of the air vent. ●It also prevents dust and dirt from getting into the air vents. ●Comes with a replacement notification sign that pops up when the filter becomes dirty (it may not pop up depending on the air flow). ●Product size: Approx. 20 x 20 cm