I remove ours monthly in our ducted system, just pull them straight down. Our intake ducts, we have 4 in the living room/kitchen area and 2 in the bedroom, do not have movable louvers but do have foam filters that we clean monthly.
The ducts where the AC air comes out do have movable louvers and these we have not removed.
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Bill, Maura & Rosie the rescued Boston Terrier
2016 Winnebago Adventurer 38Q-26K Chassis...traded in 2015 Wildcat 282RKX
Towing 4 down 2014 CR-V EX-L w/Nav & Blue Ox & Ready Brute Elite or 2018 Colorado Crew Cab 4x4 V6 longbed
NRA Endowment Life Member, FMCA #455593, WIT #170814 & Mid-Ohio Winnies
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