The 320 Gram Pack from Boveda is their largest size yet. The 60 gram pack is the most popular size but they released the 320 gram to condense 3-4 normal packs into one. Boveda says that this new release will last up to 6x longer than a normal Boveda 60 gram pack. These packs are created to fit into humidors ranging from 25ct to 150ct. The 320 Gram Pack is accurate to +/= 1% as long as they are kept in an airtight environment.
Dimensions: 6.75" x 5" x 0.82"