Profile: Griffin & Cantrell Co., Inc. is a designer, developer and manufacturer of enclosures for fluid devices. We offer freeze and vandal protection enclosures for backflow preventers, pumps & control valves. Our aluminum insulated enclosures are designed to house fluid conveying devices, which require protection from freezing, vandalism, tampering and/or weather degradation. Our Water Safe lift off enclosures are designed to cover small backflow assemblies sized 1/4" through 2".