CORROSION PROTECTION EMITTER - DESIGNED TO PROTECT PRODUCTS, COMPONENTS OR PARTS AGAINST CORROSION WHEN ENCLOSED IN NON- VENTILATED HOUSINGS, CONTROL BOXES OR OTHER ENCLOSURES - THE VPCI EMITTER RELEASES A VAPOR INTO THE INTERIOR OF THE PACKAGE - THE VAPOR THEN DEPOSITS ON THE METAL SURFACE AND FORMS A PROTECTIVE MOLECULAR LAYER - THIS LAYER OF VPCI PROVIDES MULTI METAL PROTECTION AND HELPS REDUCE CORROSION FROM MOISTURE ATTACK IN THE ENCLOSURE - PROTECTS 10 CUBIC FEET (283 LITERS) OF ENCLOSED SPACE FOR UP TO TWO YEARS - NSN 6850-01-456-2971, MIL-I-22110C - SELF-STICK BACK AND SELF-STICK LABEL ON WHICH TO WRITE THE INSTALLATION DATE - FDA AND USDA APPROVED - VAPOR PHASE CORROSION INHIBITING EMITTER - 2.5" DIAMETER X 2"H - CORTEC VPCI-111