Therm-O-Rock
Located in Chandler, Arizona, Therm-O-Rock is the Southwest’s largest producer of expanded perlite and vermiculite products.
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Vermiculite (Medium Grade)
$23.50Certified Asbestos Free. Horticultural Vermiculite by Therm-O-Rock provides superb aeration and moisture retention when mixed in with peat, bark or ...
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