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VCI Emitters (also known as VCI diffusers) provide targeted corrosion protection in hard-to-reach enclosed spaces or can be used as added protection to ZERUST® VCI packaging products. VCI Emitters emit powerful ZERUST® Vapor Corrosion Inhibitor Technology (VCI) molecules into an enclosure that settles on metal surfaces and protects them from corrosion.  It is important that you use the proper diffuser model, depending on the size of your enclosure.  You may use the volume calculator below to find the volume of your enclosure.

Volume Converter

Rectangular Box


Here are some common-sized items for visualization:

VCI volume calculator VCI volume calculator VCI volume calculator
                Mini Fridge – 4 ft³ (0.12 m³)                      Fridge/Freezer – 35 ft³ (1 m³)          Shipping Container – 900 ft³ (25 m³)