Package Includes:You will receive 30 pieces activated carbon ceiling fan filters,enough quantity can meet your daily needs,providing you with cleaner and fresher air.Material:The air vent filters for home are made of activated carbon.It can filter dust in the air and has strong adsorption force,quietly and invisibly cleaning the air when you run the fan,improve indoor air quality.Provide a safer and more comfortable living atmosphere.Size Information:The vent filters size is approximately 25x9cm/9.84x3.54inch.The size suitable or bigger for most ceiling fans.Also the ceiling fan filter can be easily trimmed and customize according to your needs.They are not easy to fall off and keep your home smelling fresh.Easy to Use:The activated carbon filter adopts a sleek and minimalistic velcro design,which is self-adhesive and can be easily attached to the top of the fan blades for easy replacement.The filters are designed to fit discreetly on top of the blades,so they stay out of sight.Before installation,please make sure the surface of the ceiling fan is clean and dry so that the velcro can achieve the best adhesion effect.Widely Function:The activated carbon filter are usually often used at home on ceiling fans,bedrooms,kitchens,bathrooms,shops,garages,labs and other areas where good quality air is needed.They can absorb and block most dust and dirt,providing a better environment for your life and work environment.