Westinghouse : BB1620, MU1620, NC1620 York : YMU1620, YNC1620 The Nordyne 918394 can be used to replace collection cells in second generation ("flat top") electronic air cleaner that with their cells removed have a clear opening at least 15 3/8" x 21 7/8" x 5 1/4". The Nordyne 918394 air filter can