This mounting plate allows you to hang the large 320g Boveda pack inside the lid of your humidor. It also includes a magnetic mounting kit. Up until now, the largest and most popular size (60 grams) has been Boveda's bread and butter for wood humidor maintenance. Typically, 3-4 packs are used to properly regulate a desktop humidor. This process has been condensed into a larger single unit with our 320 gram pouch. The pouch lasts up to 6x longer than any previous Boveda pack. Boveda believe this format will become the new standard in the tobacco market, providing cigar smokers with less maintenance than ever before. The 320 gram pouch is designed for humidors of all sizes, ranging from 25 count to 150 count. Multiple 320g packs can be mounted in even larger humidors and cabinet humidors. More Info HUMIDOR CAPACITY QUANTITY OF BOVEDA 25 Cigars 1x Size 60g or 1x Size 320g 50 Cigars 2x Size 60g or 1x Size 320g 75 Cigars 3x Size 60g or 1x Size 320g 100 Cigars 4x Size 60g or 1x Size 320g 150 Cigars 6x Size 60g or 8x Size 320g 200 Cigars 8x Size 60g or 2x Size 320g 250 Cigars 10x Size 60g or 3x Size 320g 300 Cigars 12x Size 60g or 3x Size 320g