Earthwool DriTherm Cavity Slab 32 Ultimate is a high density slab offering very high levels of thermal resistance for the thermal insulation in residential and non-residential masonry cavity external walls Excellent thermal performance Made with ECOSE® Technology which does not contain any added phenol or formaldehyde. Products made with ECOSE® are soft to touch, they generate low levels of dust and low VOCs Non-combustible Euroclass A1 Reaction to Fire classification rating Slabs are sized to fit between wall ties without the need for retaining discs British Board of Agrãment approved for use in all exposure zones