Premium electrostatic filtration captures microscopic particles to significantly reduce household dusts and allergen while protecting your home from unwanted contaminants, featuring a generous 200cm x 100cm needle punched cotton filter roll and 300cm of double sided tape Ideal for homeowners, renters, and enthusiasts seeking an effective methods to improve indoor air and protect their HVAC systems from dusts buildup in various living spaces This highly adaptable solution is crafted from needle punched cotton materials and includes ample tape, allowing it to be easily cut to precisely fit any vent size, grilles, or register without requiring removal of the existing fixtures for installation or replacement Perfectly suited for covering standard and without standard sized heating intakes vents, air conditioning registers, and exhaust grilles throughout residential homes, apartments, and other living areas requiring enhanced air filtrations Simply apply the strong double sided mount tape around the outer edges of your vent cover and press the customs cut filter materials into place for secure adherence and effortless future filter changes that maintain optimal airflows, Manufacturer: BULAIDAI