4" hinge hinge opening dimensions: 3.9 x 3.7 x 0.15" Stainless steel self-closing leaves with self-closing door function, adjustable spring hinges, (2-pack) self-closing door function, with mounting screw set. Automatic doors that open inward or outward: Designed for any door facing left or right. These hinges even fit heavy duty doors or screen doors, screen doors, solid wood doors, cabinet doors, tables, bags, fences and more and are designed to fit on any left or right door; ADJUSTABLE SPRING: These self-closing hinges feature an adjustable tension spring that allows you to control the closing speed and pressure of any door, and the self-closing mechanism ensures the door closes softly and securely from almost any position, keeping your hands free and your space clutter-free . Stainless steel automatic closing hinges are suitable for various doors, such as wooden doors, metal doors, indoor, outdoor, residential and commercial doors; strong load-bearing capacity, hydraulic spring, low noise, smooth opening and closing These durable self-closing door hinges are perfect for high-traffic areas. Featuring a self-closing spring mechanism and adjustable tension, they keep interior doors closed securely and prevent drafts and noise. The hinges close doors at a safe, controlled speed without slamming. The corrosion-resistant steel construction stands up to frequent use and weather elements, making them suitable for exterior doors as well. At 4 inch, these hinges have a standard radius that fits corner openings on most residential doors. Fire-rated and available in a convenient two-pack, they install easily without modification to meet code. Great for bathrooms, pantries, basements, and more, these hinges help maintain privacy and energy efficiency throughout the home.