2120 Frost Fighter Defroster Grid Repair Kit. The new Frost Fighter Grid Repair material features improved electrical properties, better bonding and uses the heat from the defroster to flash cure for fast defroster grid repairs. This is a breakthrough product improvement. Use the new Grid Repair Kit when rear window defroster grid lines stop working. The fine horizontal heating elements on defrosters can be easily damaged by a single scratch or multiple breaks of the heating elements. Repairs are made by masking off and painting the Frost Fighter grid repair conductor over the damaged area. The conductor bonds aggressively, dries quickly, and is color-matched for invisible repairs. New Breakthrough Defroster Grid Repair Technology The new 2120 Grid Repair material is a breakthrough technology featuring a tougher, more conductive repair that self cures in 20 minutes using the heat from the defroster. No more overnight curing! Each kit has 5 grams of repair conductor for up to 35 total inches of repairs using the recommended two coats. This quantity of material allows multiple repairs from a single kit. Repair multiple breaks in the defroster elements up to 3-5 inches in length. To repair a grid just paint on the repair coating, air dry for ten minutes, and then turn on the defroster. The heat from the defroster cures the repair. This is an easy repair you can do yourself and save the high cost of glass replacement. Frost Fighter is a Registered Trademark.