Boveda Replacement 49%/70g Packets, 4-Pack

Two-way humidity control refills for wooden instrument cases

Boveda Replacement 49%/70g Packets provide convenient refills for Boveda humidity control systems used with wooden musical instruments. Each 70-gram packet uses a specially prepared solution of pure water and natural salts enclosed in a water-vapor-permeable membrane. The two-way system responds to changing conditions by adding or absorbing moisture as needed, helping maintain a more stable environment for instruments stored in their cases.

This four-pack works with both Boveda Guitar and Wood Instruments Kits and is designed to maintain 45–55% relative humidity, centered around 49% RH. Packet life varies with ambient humidity, season, and the quality of the instrument case, but each packet typically lasts approximately two to five months. No water or routine refilling is required; simply replace a packet when it becomes rigid. These Size 70 replacement packets offer an easy way to keep a compatible Boveda system supplied for ongoing humidity management.

Features & Specifications

• Humidity Control: Two-way system adds or absorbs moisture as conditions change
• Relative Humidity: 49% RH packets designed to maintain 45–55% relative humidity
• Packet Size: Size 70, 70 grams each
• Contents: Four replacement humidity control packets
• Compatibility: Works with Boveda Guitar and Wood Instruments Kits
• Solution: Pure water and natural salts enclosed in a water-vapor-permeable membrane
• Typical Packet Life: Approximately 2–5 months depending on season, case quality, and ambient relative humidity
• Replacement Indicator: Replace packets when they become rigid
• Maintenance: No water or routine refilling required