Filter Change Instructions for RESPA CF2, CFX2, FFX2, CF, CFX
MERV 16 and HEPA Filters:
Grease packet is included with filter;
lubricate inside open end of filter on black seal.
Odor/HEPA and Gas/HEPA Filters:
O-ring and grease packet are included with filter;
place O-ring in groove on outside of filter outlet and lubricate with grease.