80mm x 2400mm x 1200mm Celotex PIR Insulation Board GA4000The Celotex GA4000 PIR Insulation Board is a versatile and efficient solution for roof, wall, and floor applications. With a low thermal conductivity of 0. 022 W m. K, it delivers exceptional thermal performance, reducing the thickness required to achieve target U values. Lightweight and easy to handle, its low emissivity foil facing enhances thermal efficiency in sealed cavity air spaces. Key Information Multi Application Use: Ideal for roofs, walls,