ESPEC North America, Inc. (Corporate office)4141 Central Parkway
Hudsonville, MI 49426 USA ESPEC North America, Inc. (Colorado/Qualmark office)
12600 E. Smith Road
Aurora, CO 80011 USA
303-254-8800
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The new BTL-433 model is made in the USA and replaces our previous model LHU-113. Many requested features have been included: expanded temperature & humidity ranges, direct water connection (no refilling tank), and a viewing window option. All for about $2,000 less.