NaturalAire Pre-Pleat 40 Charcoal Air Filter， MERV 6， 20 x 30 x 1-Inch， 12-Pack</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Pack of 12 high performance bi-component synthetic media air filters to help eliminate dust and contaminants</li><li>MERV 6 rating: Removes household dust， pollen， dirt， and mold spores</li><li>V-pleats provide large media surface area for more effective filtration while keeping airflow resistance low</li><li>1-sided expanded metal backing for corrosion protection plus moisture resistant frame</li><li>Compatible with HVAC systems requiring filters sized 20" x 25" x 1"</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/61T41j1M87L.jpg' noproxy></br>