At Hanover, Shrewsbury, and Gettysburg Concrete, we are proud to offer Fox Blocks ICFs. Fox Blocks are a revolutionary and environmentally friendly insulated concrete wall system used to build walls and foundations for any type of building. Fox Blocks ICF is a lightweight, rigid, foam-insulating, block-forming system for above- and below-grade, steel-reinforced, concrete walls. The foaming units are stacked and locked together to quickly build a wall. Fox Blocks ICF can be tall or short and varies in thickness. It may be used for both interior and exterior construction and can be designed for use with any shape or curve.