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Knauf Earthwool Frame Therm Slab 35 are resilient, non-combustible, glass mineral wool rolls, with a l ambda of 0.032 W/mK to suit commonly used stud or joist centres. Earthwool Frame Therm Slabs are specially designed for the thermal insulation of external walls and warm roofs in timber frame constructions and are friction fitted between studs and rafters. Earthwool Frame Therm Slabs represent no known threat to the environment and have zero Ozone Depletion Potential and zero Global Warming Potential. This roll is availble in either 90mm or 140mm , contact us today to find out more.