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ASHRAE Handbook Application Chap.49 Noise and Vibration Control 내,

NAFA, National Air Filtration Association, User Guide for ANSI/ASHRAE Standard 52.2-2012, “Understanding MERV, Nov. 2014” INTRODUCTION This ANSI/ASHRAE Standard 52.2 "Understanding MERV" User Guide was created by the National Air Filtration Association (NAFA), an international group of air filter distributors, manufacturers and engineers. This Guide, and the application of a particle-based conta..