Air Preparation Unit C72S-DK2091 filter element details: 

 Maker  - NORGREN 

 First filter (Att.3)- 5um (length 37mm, outer diameter 20mm, inner diameter   14mm) 

 Second filter cartridge (Att.4,5) - 0.01um (length 50mm) 

FILTER ELEMENTS SET

100477001 MAKER: HYUNDAI ENGINE&MACHINERY DIVIS. HHI-EMD 

HYUNDAI.NA.100477001