A wide range of door hinges, including invisible hinges, concealed door hinges, and adjustable hidden hinges are available for you to choose from. HES-3D E190 concealed hinges are not only UL fire rated hinges but also adjustable concealed hinge for heavy doors. The HES-3D concealed hinge series come with 3 way adjustment function allowing vertical, horizontal and depth adjustment after installation - you can install the HES-3D concealed hinges to your doors with piece of mind. In addition, highly acclaimed door closer damper hinge, LDD-V and LDD-V100, makes a slamming door silent by preventing the door from slamming with the use of patented Lapcon technology. Combining LDD and HES-3D hinge series will result in an ultimate hidden door creation or totally flush-to-wall door that eliminates the need for visible door post, frames, and exposed hinges.