... Compliant 3.UL certified 4.High dust holding Electronics air filters offer high dust arrestance and ... low resistance when installed in electronics: SizeCustomizedFrameStamping aluminum alloy or according to client's requestMedium colorBlack, gray, green, ... oxide coating or follow customer's demandApplicationIndustrial,medical,telecom,electronics,networking,communications,HAVC,broadband/CATV.,etc