filter room

band-pass filter / bandpass filter (BPF)

dust filter / dust shield, particle filter

dust shield / dust filter, particle filter

filter housing / filter unit

filter unit / filter housing

particle filter / dust shield, dust filter

finite impulse response filter (FIR-filter)

passband filter; bandpass filter (BPF)

control room

engine room

fore torpedo room

head room

main control room

operations room

orderly room

steering gear room

stern torpedo room

antiaircraft operations room

case the room

work in the mail room of Germany's Federal Intelligence Service

airport customs room

room temperature vulcanizer (RTV)

back-room boy

amusement room

allow sufficient maneuver room

orderly room clerk

orderly room sergeant

combined antiaircraft operation room

elbow room

sector оperations room

cleansing room

loading room