D'Addario PWHPRP03 Auto Humidity Control System Refill 3-Pack

The Planet Waves Two-way Humidification Replacement Pak lets you maintain a constant 45% humidity level for your instrument. The Two-way Humidification Replacement Pak keeps a steady humidity level by adding or depleting moisture as necessary. Now you can keep your prized instrument stored without having to resort to messy, refillable units. Protect your investment with the Planet Waves Two-way Humidification Replacement Pak.

Key Features:

-True two-way humidity control

-Maintains constant 45%RH within the instrument case

-No water, no drips, no mess

-Long lasting, maintenance free design

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