4WN means Four-port Wall plate, Nylon in Commercial
Similar to 4WN
ACMV - Air Conditioning Mechanical VentilationACMV - Assist Controlled Mechanical Ventilation
ACORN - Associations Of Communities Organized For Reform Now
ACOS - Adjustable Coil Over Spacer
ACP - Aerosol Collector Pyrolyzer
ACQ - Alkaline Copper Quaternary
ACR - Advanced Communications Riser
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