LEGACY - RESPA-CFX/FF/FFX Service Part/Upgrade: Filter Housing EXTension Kit with MERV 16/F9 Filter
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Use as an extended-length filter housing replacement service part, or as a filter extension kit for RESPA-CFX/FF/FFX. As an upgrade from standard length filter housing, it allows for increased filter life and roughly 10 CFM of additional airflow. Adds 5 inches to the overall length of the unit. MERV 16 extended length closed filter is included.