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Boveda B49-70-4P 2-way Humidity Control Packet - 4-Pack

Boveda Humidity Control Kit Refill Pack - 4 Packets
$19.99
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Boveda B49-70-4P 2-way Humidity Control Packet - 4-Pack
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$19.99
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Refill Pack for the Boveda 2-way Humidity Kit

Extend the life of your treasured acoustic instrument with the 2-way humidity control kit from Boveda. Fluctuating humidity levels can wreak havoc on your acoustic instrument, causing it to warp, shrink, and crack. Not only does that ruin your instrument’s aesthetics; over time, it can ruin its tone or, ultimately, render it unplayable. At Sweetwater, we’ve tried a lot of different humidity control systems, but none quite like the Boveda 2-way humidity control kit. Boveda’s unique product uses a specially formulated pure water and natural salt solution encapsulated in a water-vapor permeable membrane to maintain a constant relative humidity level of 40%–50% when placed alongside your instrument in its case, preventing devastating humidity fluctuations. You can rest assured that your instrument is kept in an ideal environment. When your packs have become saturated and rigid, simply swap them out with Boveda's refill packets. This refill pack contains four 49% relative humidity packets, each with a two-year shelf life; so, you can keep some on hand for whenever you need them!

Boveda Large 2-way Humidity Control Kit Features:

  • Maintains a relative humidity of 40%–50% when placed with your instrument in a closed case
  • Prevents warping, shrinking, and cracking to preserve the look and tone of your instrument
  • Large kit is ideal for acoustic guitar, cello, double bass, bassoon, bass clarinet, and more
  • 2+ year shelf life in original packaging
  • Once the packs become rigid, simply replace with Boveda refill packs (sold separately)
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Tech Specs

  • Manufacturer Part Number: B49-70-4P

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Customer Reviews

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Rated 5/5

The Humidity killer

I think it's easy to see most of our precious instruments are made of wood. Keeping the wood at a desired humidity will keep joints and bindings from cracking and pulling away from the body. These packs do the job perfectly and most of all Reliably. I include the D'Addario humidity transmitter which Bluetooths to my phone for easy monitoring.
Music background: Musician since 5th grade. 1966 playing the flute. In Alaska. Not the most popular instrument at the time, but you sure learn how to read music! That's a taste.
Rated 5/5

Nancy's review

This makes things easy to humidify your string instruments since I play several . Just open them up put them in your guitar,ukulele or mandolin case and that's it.
Music background: Singer Songwriter Musician
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