New Replacement Air Filter Screens (ONE PAIR SCREENS ONLY) for use on OSSA MAR and Explorer Air Boxes. TECH NOTE: (YOU WILL NEED TO USE SOME KIND OF WATER PROOF GREESE (e.g. BELLRAY) AROUND FILTER TO MADE A NICE AIR TIGHT FIT). MANUFACTOR AND SELLER MAKE NO CLAIMS AS TO THEIR FIT OR FUNCTION. SPECIFICATIONS MADE FROM 30+ YEAR OLD PARTS.  FOLLOW UNI-FILTERS RECOMMENDATIONS FOR CARE OF THE FILTER.