GODREJ DOOR CLOSER Hydraulic Door Closers: These are the most common type, which use hydraulic force to control the speed and force of the door's closing motion. Pneumatic Door Closers: These use air pressure to provide a smooth closing action. Concealed Door Closers: These are installed within the door frame and are not visible when the door is closed, offering a sleek look. Heavy-duty Door Closers: Suitable for larger, heavier doors or doors in high-traffic areas. IF ANY QUERY CONTACT SOHAN LAL GUPTA & CO. MOBILE NO:8650333361