The Accumulair Titanium 15x20x1 air filter contains our high-efficiency Tribo-Electric filter media engineered to the next level with a mini pleated design. This special co-polymer blend media also contains odor reduction technology and does not support the growth of harmful contaminants. The self-supported media has a mini-pleat design to maximize the filter's surface area and particle-holding capacity. This media has been tested to perform at the Minimum Efficiency Reporting Value of 13 (MERV 13) by an independent lab according to ASHRAE Standard 52.2. This air filter specializes in capturing up to 98% of airborne contaminants such as dust, lint, dust mite debris, cement dust, lead dust, standing dust, insecticide dust, small fibers, pet dander, fine powders, auto emissions, fine powders, tobacco smoke, smog, and other airborne contaminants.