SG40 Silica Gel 40 Gram Unit

40 gram size. Protects up to 3 cubic feet of enclosed space. Drinks up moisture from within enclosed storage spaces, safes, etc. Prevents condensation, stops rust, mildew, corrosion, spoilage. Once saturated, built-in indicator turns from blue to pink signaling need to reactivate unit. Reactivates easily in oven for lifetime protection. Approximately 2" x 4" x 1/2" in size. Made in the USA.