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Extech 445815 Humidity Alert Hygro Thermometer

Extech-445815-Humidity-Alert-II-Hygro-Thermometer-EXTECH-445815-P-Damage-resulting-from-high-humidity-and-poor-ventilation-in-storage-rooms-offices-and-houses-not-only-costs-money-to-repair-but-is-also-unhealthy-and-unsightly-Most-people-think-that-the-dampness-comes-from-outside-but-that-is-often-not-true-In-reality-moisture-is-caused-inside-the-house-by-evaporation-in-the-kitchen-and-bathroom-The-use-of-highly-insulating-building-materials-greatly-reduces-ventilation-which-means-th

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