We offer a MERV 8 & a MERV 11 filters. The Merv 8 is good the MERV 11 is better. MERV (Minimum Efficiency Reporting Value) is an industry standard which rates the ability of a filter to trap particles 0.3 to 10.0 microns from the air we breathe. Most ordinary, inexpensive filters found at hardware stores are MERV 4 or lower—they are simply ineffective in capturing smaller particles. In addition, filters are pleated to increase the surface area allowing for more holding capacity and less frequent replacement.
Assembled in the USA!
Qty 1 is a 12 pack.