DESIGN PATENT No: D920075 - TamBee design patent product, please purchase with TamBee brand HEAVY LOAD BEARING - 100kg / 220lbs per set. APPLICABLE DOOR THICKNESS>40mm. DOOR WIDTH<800mm. DOOR HEIGHT<2500mm. Our invisible door hinge kit is built with quality made 304 stainless steel materials and spring latch is made of Aluminum Alloy EASY TO INSTALL AND ADJUST - We provide detailed instructions. Novices and experts can easily install and adjust our pivot door hardware and latch with no special tools needed SELF CLOSING SPRING LATCH - The spring loaded latch helps automatically reset and lock the hidden door. The adjustable cable for wooden doors will help you open and close your gates with ease DIMENSION - Hinge: Top Part 130x25mm / 5.1x1inch, Bottom Part 105x25mm / 4.1x1inch, Latch: 58 x 44mm / 2.28 x 1.73inch. Package includes 1 set of Pivot Hinge with Screws, 1 pcs Spring Latch Lock and 1 meter long Cable MULTIPLE USAGE - Heavy duty pivot hinges perfect for secret rooms, pivot door hardware, hidden door hardware, hidden door, bookcase doors, bookshelf door, and storage solutions