Dust Collection Filter Replacement FZA51HF is made with durable synthetic fiber. The folding design is used to increase the filter area, and the uniform spacing allows the air to pass through the filter evenly and be pressurized evenly. Our dust collection filter replacement uses high-density over-materials to efficiently filter large particulate contaminants, dust, some allergens, hair, PM10 and other contaminants. HEPA filters can effectively remove of large and airborne particles, including dust, pet dander, common pollutants, and fabric fibers. It is very easy to replace and helps your machince perform. It is Compatible with Sharp Air Purifiers FU-A51-W, FU-B51-W, FU-D51-W, FU-E51-W, FU-F51-W, FU-G51-W.