CFM Reducer Manual
RED006
2277 Harbor Bay Pkwy
1.888.880.8368
Alameda, CA 94502
 6” Round Airflow Reducer - 25 CFM Reduction
 For use with the following models:  
 Arc and Cheng Collection (w/CBI-600A blower), 
 AK75xxASX and AK8300ASX (w/CBI-600B blower), 
 AK70xxAS, AK8100AS, ZAG-xxxAG, ZAN-xxxAS, 
 ZAZ-xxxAS, ZSA-xxxBS, ZFI-M90BS, ZRM-xxxBS,
 ZRO-xxxBS.
AUG11.0101
3
21
25 CFM 
REDUCER 
KIT INSTALLED
RED006 - 2011
25 CFM 
REDUCER 
KIT INSTALLED
RED006 - 2011
4
1. Remove existing damper and damper
 clips from blower collar.
2. Position CFM reducer so that reducer 
 clips hang over blower collar.
3. Firmly press down on CFM reducer 
 clips to secure CFM reducer in place.
4. Attach reducer installation confirmation 
 sticker to a conspicuous location on the 
 interior back wall of the unit.
25 CFM 
REDUCER 
KIT INSTALLED
RED006 - 2011
6” Round Damper
CFM Reducer Plate
Installation Confirmation
Sticker
Included Materials:

