Inquiry (采购产品): Where to buy replacement filters Good Morning, Where are the replacement filters for bathroom ceiling ventilation units sold? I have two units and each has a 4" x 7" x 0.25" metal framed filter. No model number is listed but the pull tag lists U.S. Pat 4227904. Thanks in advance. John **** Hidden Message ***** JOHN HAMILTON 75006 USA Company: SELF-EMPLOYED E-mail: johnbhamilton@hotmail.com **** Hidden Message ***** johnbhamilton@hotmail.com
