Sleek DDC-1115 is the latest innovation of aluminium alloy hydraulic door closer for conventional usage through DOORKING R & D, which are customer friendly. The main silent features of this model is that the main body of door closer is made from aluminium alloy extruded section with slim & sleek look with extra power too. The extruded body also assure the long life and least maintenance. The rack & pinion system also assure the high power and perfect performance.