Inquiry (采购产品): carbon filled metal filter I have a filter with a D-Mark Filter I need to replace. There is a D-Mark sticker with a 527L designation on it, showing a 1981 date. The filter is 7" x 7.5", apprx .25" thick. There is a hole just of center. It goes in a ventilation system in a bathroom. The filter is metal mess, circular holes, filled with carbon. Do you have them. DI am looking for a filter **** Hidden Message ***** james dieffenwierth 76179 USA Company: IN2 FR8 Logistics E-mail: in2fr8@hotmail.com **** Hidden Message ***** in2fr8@hotmail.com