Nispira premium hepa and activated charcoal air filter replacement set compatible with air purifier model a350 & a375 compared to original part no bf25a high quality hepa filter captures 99.97% of airborne particles down to 0.3 microns. activated charcoal filter can trap big particle such as hair, dust. it also deodorizes any unfavorable household odor approx dimension: 15.25 x 12.75 x 2". suggest to replace every year to optimize the performance 2 filters included. 100% customer satisfaction guaranteed. quality meets or exceeds leading national brand
