50mm x 2400mm x 1200mm PIR Insulation Board GA4000Elevate your insulation game with PIR TB4000 Insulation Boards, designed for optimal thermal efficiency. With a remarkable thermal conductivity of just 0. 022 W m. K, these boards significantly reduce the thickness of insulation needed to achieve your target U value. The low emissivity foil facing enhances thermal performance in sealed cavity air spaces, further improving the achievable U value. Lightweight and rigid, PIR boards are easy to transport,