(GC-10K-ER) GC-10K-Extended ReleaseThe GardnClean Extended Release deodorizer is a next generation, humidity activated ultra pure chlorine dioxide (CIO2) generator. This simple to use product improves air quality for up to 30 days. GC Extended Releases are ideal for odor mitigation protocols and limiting cross contamination of odors and VOCS (Volatile Organic Compounds). Size GC 10K ER (up to 10,000 cu ft)