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简单介绍：
Membrane Storage Box, Round, OD: 82 mm x 17 mm High
详情介绍：
Round Membrane Boxes
These style boxes feature hinges for ease in opening and closing. Like all the other SPI Membrane Box family of storage boxes, these too exhibit good sealing properties against moisture penetration.
Dimensions:
- Outside Diameter: 3.25" (82 mm)
- Minimum Useful Membrane Diameter: 1.57" (40 mm)
Net weight: 100g