The Ecotherm Eco-Cavity Full Fill 1200 x 450 x 90mm is a high-performance insulation board designed to fully fill the cavity in new build constructions. Made with rigid polyisocyanurate (PIR) foam, it provides excellent thermal efficiency while reducing heat loss. This robust and reliable insulation is easy to install due to its precise dimensions and lightweight design. Engineered for durability and longevity, it effectively combats the elements, ensuring your home remains warm and comfortable all year round.