Boveda B49HA High-Absorbency Refill Packs

• Product Description:
  Boveda B49HA High-Absorbency Refill Packs are specially designed for wooden instruments stored or played in environments with consistently high humidity levels (above 60%). These refill packs use Boveda’s patented 2-way humidity control technology to maintain a stable relative humidity (RH) between 40% and 60%—the industry standard for wooden instrument care.

  Ideal for acoustic and electric guitars, basses, cellos, banjos, violins, and other wooden instruments, Boveda B49HA prevents warping, swelling, mildew, and tonal degradation. These packs are to be used with Boveda fabric holders and require no activation or maintenance—just slip them into the holder and place them in your instrument case.

  Key Features:

  • Maintains optimal humidity (40–60% RH) in high-humidity climates

  • Designed for instruments exposed to 60%+ year-round humidity

  • Protects wood from warping, swelling, and mildew

  • Preserves tone, feel, and structural integrity

  • No activation required—ready to use out of the package

  • Compatible with Boveda fabric holders (sold separately)

  • Safe, mess-free, and maintenance-free

  • Pack options: 4-pack (not individually wrapped), 12-pack (individually wrapped), and 20-pack brick (bulk, not individually wrapped)

    Usage Guide:

    • Violin, Viola, Ukulele, Clarinet, Oboe – 1 pack

    • Banjo, Bass Clarinet, Bassoon – 2 packs

    • Acoustic Guitar, Electric Guitar, Cello, Harp, Upright Bass – 4 packs

Always insert Boveda packs into holders before placing them in your case. Do not mix different RH levels or use with other humidification systems.

Specifications: