trap 12 each division 30 may be in fluid communication with one or more of openings 46 and one or more of openings 74 each filter 30 may be modular and independently replaceable in addition each filter 30 may include one or more filter sections 64 as illustrated in the different exemplary embodiments of a particulate trap 12 of fig5 and 6 each of filter sections 64 may be permanent sub cartridges of a filter 30 and may include corrugated wire mesh media 65 that are electrically conductive and separated from each other and from housing 34 by additional insulating members 66 and 67 alternately each of filter sections 64 may include a non conductive ceramic filter media having electrically conductive fibers each of filter sections 64 may be stacked in rows columns and or layers fig2 3 and 5 illustrate an embodiment where filter sections 64 are stacked in layers while fig6 illustrates an embodiment where filter sections 64 are stacked in columns fig7 a illustrates a number of exemplary alternative holding members 86 88 90 92 and 94 used for stacking one filter section 64 on another filter section 64 and for insulating one filter section 64 from another filter section 64 only one type of holding member would typically be used in a particular trap the holding members may or may not be.