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Integra Boost RH 2-Way Humidity Control, 55 Percent, 4 Gram (Pack of 20)
4 Gram Size 55% Relative Humidity Level Works with up to 14 grams of product in a sealed container Replace when the dot turns blue on the included Humidity Indicator Card Contains 20 packs, individually overwrapped, each with a Humidity Indicator Card   Integra, Item Weight  1 pounds, Product Dimensions  6 x 4 x 2 inches, Item model number     'Tools & Home Improvement'  'Dryer Replacement Parts'  None, 'Refrigerator Replacement Motors'  None, 'Appliances'  None, 'Refrigerators'  None, 'Parts & Accessories'  None, 'Portable Clothes
Price: $18