Environmental Statement All CBIS/Korfil products are free of CFC's, HCFC's and formaldehyde. It is our policy to encourage recycling and energy conservation. Concrete Block Insulating Systems, P.O. Box 1000, Freight House Road, West Brookfield, MA 01585-1000 508.867.4241 - 800.628.8476 - Fax: 508.867.5702 E-mail: E-Mail Us