Merv 15  Conical Filter Cartridge Assembly (PV127-A) for enhanced filtration performance. This filter cartridge features Merv 15-grade media designed to capture fine particles and improve air quality during operation. Important: . Filter media is fragile and requires careful handling during cleaning. Cleaning Instructions: Use a shop vac for cleaning. Direct compressed air along the pleats only—never direct air into the filter media, as this can easily tear the delicate material. Proper maintenance extends filter life and maintains optimal performance.