... the fidgets referred above.Features:Filter: 4" Flange Activated Carbon Charcoal Filter Maintenance Free Design Safe and ... commercial and industrial applications CE certificated Specification:Carbon Norm CTC70Avg. Life Expectancy of Carbon 1.5 ... such as air filter, water filter, oil filter, carbon filter, acid filter, oil purifier, filter bag, bag filter, filter cartridge , filter equipments etc.Reason ...