1、[Durable Material] Made of high efficiency particulate air, which is durable, and can be used with confidence for a long time. 2、[Reduce Dust] This air purifier filter can reduce dust, pollen and other allergens into the air you breathe. 3、[Improve Efficiency] Improve the cleaning efficiency of the air cleaner, so you can use it for a long time to meet your various need. 4、[Perfect Accessories] Filter screen is easy to install and replace, easy to use, and it is the perfect accessory for air purifier. 5、[Widely Application] Fit for Holmes Aer1 HAPF30AT, widely used in home floor, bedroom, living room, office, etc. 1 x Filter Screen Item Type: Air Purifier FilterMaterial: High efficiency particulate airFitment: Fit for Holmes Aer1 HAPF30ATWeight: Approx. 154g / 5.4ozProduct Size: Approx. 25.3 x 12.6 x 3.6 cm / 10 x 5 x 1.4 in