This concealed door hinge is designs for seamless installation, seamlessly blending into the door frame Suitable for door with a thickness of 38-50mm / 1.5-1.97inch and a width of Less than 900mm / 35.43inch Make of Stainless steel materials, which enhances the resistance, durability, and rusts resistance Adopts a 125° horizontal opening angles designs, which can silently open and close the door from multiple angles Can be used for bedrooms, kitchens, living room, classrooms, hotel, offices, wood houses, shops, dormitories, Manufacturer: sodeber