Thermfrax® Millboards are a series of high density, rigid board products suitable for a variety of heat-resistant and industrial sealing applications. Unifrax Millboards are available in a range of different formulations, each of which exhibits specific characteristics and physical properties. Millboards are also available in a selection of thicknesses. Unifrax rigid board products are manufactured to provide excellent performance in any application that requires high modulus of rupture (MOR) and a rigid form. The product is designed to resist erosion, vibration and mechanical stress, and can be easily customised on jobs to fit any installation.