Firespan Intumescent Pads are designed to be used on the inside or outside of electrical socket boxes to maintain fire and smoke barriers where service holes are cut into dry lining and all types of fire rated boarding. They are tested to EN1366-3 to provide up to 2 hours fire protection, and also maintain acoustic integrity of the drylining system. High tack adhesion, pliable and mouldable, self-bonding. Acoustic rated to BS EN ISO 140/3. Tested for air permeability to EN12141-1 Ventilation for buildings. Performance testing of components/products for residential ventilation.