The foamed-in-place polyurethane insulation is designed for walk-in coolers and freezers. The polyurethane panels are foamed in place with class 1 polyurethane foam made from CFC- and HFC-free materials. By utilizing state-of-the-art horizontal presses and technology, panels lie flat during the foaming process, which reduces voids in the insulation. The panels’ structural tongue-and-groove, cam-locking system provides an airtight seal between the panels restricting air infiltration into the insulation core. According to the manufacturer, every walk-in is pre-assembled in its manufacturing facility before shipment to ensure precise quality control and ease of assembly in the field.