The Penetrating Coil Cleaner features a delayed foaming action that allows the nonacid, non-chlorinated formula to attack dirt, grime, soil deposits and contaminants on the evaporators and condenser coils. Fresh citrus scent. Expanding foam action. Expanding foam action. Expanding foam action. Expanding foam action. WARNING: This product can expose you to chemicals including Benzyl Chloride, which is known to the State of California to cause cancer, and 2-Ethoxyethanol, which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov. Size 20 oz. can. Net Weight 19 oz. Units/Pack 12 cans.