Austin Air HealthMate Plus Junior Replacement Filter - White GENUINE : This is a genuine Austin Air air filter, accept no substitutes. Made in the USA. MEDICAL GRADE : Austin Air is the only manufacturer to have their products designated as medical grade air purifiers. JUNIOR PLUS : A replacement filter for HealthMate Plus Junior Machine unit. WARRANTY : As this is a brand new item it comes with an Austin Air warranty. BLACK vs. WHITE : The color does not refer to the color of your Austin System, it refers to the pre filter on outside of the filter itself, it is what you may see through the small air holes in the side of your system. It does not effect the performance, we suggest the White with a light colored system and Black with a dark colored system.