Complete hinge Atlas Inside 3.5 x 3.5 bearing SKG**® BUVA Atlas Inside security hinges are produced according to the NEN-EN 1935. To be able to guarantee quality and functionality, BUVA has set up a new test center especially for this product group. Here BUVA tests all productions of the Atlas line of hinges for durability, strength and corrosion resistance. The BUVA Atlas Inside safety hinges more than meet the CE requirements in accordance with the NEN-EN 1935 and are SKG certified for resistance class 2 in accordance with the requirements of the NEN 5096 of the Dutch Building Decree for doors. - Applicable for fire- and smoke-resistant doors - CE NEN-EN 1935 grade 13 - Noiseless maintenance-free tapered BUVALON® bearings - Blasted surface, galvanized and top coated. - Meets the highest class of corrosion resistance (4) - Hanging seam limiter at 2.6 mm - Star-shaped screw holes, this prevents breaking of screw heads