filter foam ? Sept 4, 2010 5:10:52 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by weavo56 on Sept 4, 2010 5:10:52 GMT -5 I have a sheet (12" square ) its a double layer foam ,black and light brown layers .Which side do I use on the outside of the filter box ?Graham