Manufactured by Honeywell</br>Merv 11</br>Actual Size: 12-1/2" X 20" X 4-3/8"</br></br>Product Description</br></br>New MERV 10 (at 492 FPM) performance with lower pressure drop at no additional cost.</br><br/>http://www.amazon.com/gp/product/B019Z1QUHG