bought this unit used years ago. no owners manual etc. saw a simlar one on E bay below link ... i dont know if it supp to have a foam filter and off flexible black looking filter too that would go over the top under the metal grid looking removabe cover? anyone pleasel excuse my typos as I m a peck typist with poor eyesight. Blessings to all
https://www.ebay.com/itm/2554500532...0gpILNqX3RtL3+zcBfYBdUw18s|tkp:Bk9SR8Ck2_fmYA
https://www.ebay.com/itm/2554500532...yOR6/9ngKwD2Q2yPKDaS8qb3J2UHkdybVIx7LhBk4vDeM
https://www.ebay.com/itm/2554500532...0gpILNqX3RtL3+zcBfYBdUw18s|tkp:Bk9SR8Ck2_fmYA
https://www.ebay.com/itm/2554500532...yOR6/9ngKwD2Q2yPKDaS8qb3J2UHkdybVIx7LhBk4vDeM
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