30/30 Dual 9

Guaranteed to last longer True MERV 9 maintained efficiency Meets all published hospital filter efficiency guidelines. ISO 16890 ePM2.5-55.

Unique proprietary dual layer media enclosed in the industry’s strongest moisture resistant beverage board frame.
Has an efficiency value of MERV 9 and 9-A and an ISO ePM-55.
Media formed into radial pleats supported with a welded wire grid backing.
Guaranteed to last 12 months in commercial duty applications and 9 months in industrial level applications.