Stack-On Safe "n Dry Desiccant, 4-Pack: * For use in safes, boxes, bags and more — anywhere moisture-protection is needed * Individually wrapped foil pouches * Pull in moisture to help prevent rust and corrosion * 1 packet draws moisture from 5-7 cubic feet * Packets can be recharged in a standard, vented oven * Humidity indicator shows when recharge is needed * Position packs on different shelves or locations for maximum protection * Protects 24 cubic feet for up to 6 weeks before recharging * Dimensions: 3.7"L x 1.8"W x 6.6"H * Model# SPAD-24