Tnx for all who responded about the filters....I still have some left....a # 288 [1.8 @ 6 mg ].....a #282 [250 @ 6 mg ]......a #285 [500 hz @ 6 mg ].....and a # 219 [250 hz @ 9 mg ].....the #288 is $55.00 shipped .....all others are $65.00 shipped.....tnx and 73 all.....Mark