Replacement Packs for Fretted and Bowed Instruments and Woodwinds | No Unwrapping | Resealable Bag

Boveda 49% RH Standard Size 20-Pack Brick


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If you need  to keep many instruments playing and sounding great, buy Boveda in quantity. A brick of Boveda has less packaging, but plenty of refills for Boveda Starter Kits. For professional musicians, luthiers, guitar techs and players of multiple fretted and bowed instruments and woodwinds. 

Using Boveda in an instrument case: 

  • Requires zero maintenance—no more filling messy hoses and snakes and wetting sponges
  • Maintains an ideal relative humidity range for instruments—45-55% RH
  • Prevents wide fluctuations in humidity that cause the wood to expand or shrink, and degrade its performance abilities

A 20-Pack of these Standard Size Boveda refills:

  • Directional Starter Kit
  • Small Starter Kit
  • Large Starter Kit
  • Single Fabric Holder
  • Double Fabric Holder



  1. Just slip unwrapped Boveda into the pouch(es) of its protective fabric holder. (Do not open the Boveda itself.)
  2. Place in case and close the lid. Always keep your case closed when using Boveda.

Always insert Boveda into a pouch of a Boveda fabric holder before placing in an instrument case. The fabric holder allows Boveda to last longer and work better and acts as a liquid barrier if a packet is accidentally punctured. 


  •  Mix different Boveda RH levels within the same instrument case
  • Use Boveda in the same case with other humidification products because they will fight against each other and reduce the efficiency of Boveda

To refill a Boveda Single Fabric Holder or Directional Fabric Holder: Use one (1) or two (2) Boveda 49% RH Standard Size
To refill a Boveda Double Fabric Holder: Use two (2) or four (4) Boveda 49% RH Standard Size

A Boveda 20-Pack Brick is packaged in a heavy-duty plastic bag that is resealable using its attached tape enclosure. Each Boveda is not individually overwrapped.

Boveda will last 2-6 months depending on the time of year, your climate and your case.
Unopened package: Up to two (2) years

Do the touch test. Order replacement packs BEFORE Boveda is totally rigid to avoid a lapse in humidity protection for your instrument.
Boveda is still working if you feel:
• Hardening at its corners
• Soft spots among some hard areas
Boveda is expired if: 
• The entire pack feels rock solid all the way through. 

Achieves and maintains a constant relative humidity (RH) range between 45% and 55%.

Food-grade salt, purified water and a food-grade thickening agent sealed inside a leakproof membrane.

5.25"/13.34 cm x 3.5”/8.89 cm

Brick Dimensions: 
5.5"/13.97 cm x 6"/15.24 cm x 3.5"/8.89 cm

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