General description Right - 1 Invisible Hinge made of zinc alloy with a satin stainless steel color finish. This hinge is designed for doors with a minimum thickness of 30 mm and allows for a 180° opening. It is non-reversible, meaning it can be installed for either right or left direction use. Technical specifications Material: Zinc alloy Color: Satin stainless steel Minimum door thickness: 30 mm Opening angle: 180° Dimensions (Open hinge): 56.8 x 94.5 mm