THERMOWASHER is the washer for wood screws with integrated hole cover that avoids thermal bridges. It features large, hollow spaces for proper plaster adhesion and a system that prevents the screw from pulling out. With THERMOWASHER, thermal bridges are just a bad memory. To be used with HBS screws, Ø6 and Ø8**, length depending on thickness of the insulation to be fixed. Ideal for any type of insulation. The Ø65 propylene washer is compatible with Ø6 and Ø8 screws; it is suitable for any type of insulation and any type of fixture thickness. In propylene (PP).