The 6211 4721 00 air filter assembly is used on many Chicago Pneumatic and Quincy rotary screw air compressors ranging from 20 to 30 horse power. This inlet filter includes the internal element.
This air inlet filter housing may be shown in your parts manual as 6211 4721 00, 6211472100, or 6211-4721-00. This is an OEM part by Chicago Pneumatic most commonly used on the QRS 20-30hp range. This was also used on several Atlas Copco air compressors as well. Please contact us with your serial number for confirmation this is the correct part for your rotary screw compressor.