carbon air purifier filter Brand Name: KINGLEI Usage: Intermedia efficiency air purifier filtration for absorb formaldehyde, peculiar smell, smoke and some bacterial Feature: high iodine rate, high CCL4 moderate fill small grey degree Frame(OPTOPNAL): Plastic(PP or ABS) aluminium frame water-proof paper frame size: as customization Filter media (optional): Coal columnar activated carbon Coconut-shell activated carbon carbon powder Basic material(optional): PP honeycomb paper honeycomb Other material: (air conditioning net, nonwoven fiber filtration cutton or aluminium honeycomb and so on) Protection net(optional): high temporature resistant polyester net nonwoven fiber Seal strip (optional): EPDM( high resilience) EVA ( high resilience) PU (high density) Efficiency: 99.99%