TamBee 6inch Hidden Door Hinges Invisible Hinges Concealed Hinge Zinc Alloy 180 Degree 3 Way Adjustable Butt Hinge 6 x 2.5 x 1 inch Black for Secret Room & Hidden Bookcase Bookshelf (2 Pack)

EASY INSTALLATION WITH TEMPLATE- Our hindden door hinge features a detailed positioning template in the manual for quick and accurate setup. Achieve professional, aligned results effortlessly, perfect for DIY beginners and pros alike. (Matching hinge templates are also available.) | 3D ADJUSTABLE - No need to remove the door for three-dimensional adjustability: vertical 3.0mm, horizontal 2.0mm, and depth 1.0mm. These secret door hinges are designed to fit both left-handed and right-handed doors | SILENT & STRONG LOAD - Built-in spacers reduce friction, enabling quiet door opening and closing to avoid disturbing. Each pair of invisible door hinges supports up to 88 pounds and offers a 180-degree opening angle, balancing functionality with user comfort | RUST-RESISTANT - Crafted from high-quality zinc and aluminum alloy, the hidden door hardware boasts excellent rust resistance. No special maintenance or lubrication is required | VERSATILE COMPATIBILITY - Our hidden hinges for doors are engineered for universal use on left-handed and right-handed doors, plus compatibility with wood, metal, and commercial doors (thickness >35mm, width <1000mm); These concealed door hinges are ideal for creating secret doors, bookshelf doors, french doors, folding doors, feature walls, and DIY projects