The E-333 provides dampness protection that is ideal for small spaces such as: Small closets: Eva-Dry prevents damage to fabrics and musty odors caused by excess moisture. Plastic Storage Containers: Absorbs musty odors, and prevents damage caused by excess moisture on stored seasonal clothing. Cabinets: Protects stored food from damage caused by excess moisture. Under sink: Keep the under sink area dry and mold free. Safes: Protect your valuable pictures and important documents from damage caused by excess moisture. This eco-friendly dehumidifier silently and reliably protects clothes and valuables from mold, mildew and moisture. The unit lasts 20-30 days before renewing. Special features of the E-333 includes: the unit works in areas up to 333 cubic feet, requires no batteries or cords for use, is 100% renewable, works up to ten years, is compact/silent, always spill and mess free and is non-toxic, child and pet safe! The unit measures 6 1/4" L, 1 ¼" W, 4 ¾" H.