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GLT Products is a globally recognized manufacturer and producer of products that are used in both the industrial and commercial insulation markets.  Founded in 1956 under the originating title of Great Lakes Textiles, our company has vastly expanded over the years.  We are recognized as a leading innovator of products and services in the insulation industry.  Our products serve industries for  thermal, mechanical and acoustical insulation solutions. GLT was acquired by SPI in May 2021.

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