International overhead concealed closers provide LEAK-FREE guaranteed performance under the most demanding conditions. 
 
Manufactured with 1/2" spindle for commerical applications. 
Built-in positive back stop and hold-open positions available.
Suitable for both center-hung (double or single acting) and offset doors.
Made with two control valves: Closing speed and latching speed, fully adjustable after installation.
Fits in an aluminum header or transom bar as small as 1 3/4” x 4”.
Stable hydraulic door check fluid for any climatic operation and constant lubrication. 
Barrier Free Operation to comply with Federal Accessibility Standards (ADA): complying with ANSI A117.1 (4.13.11) available for center pivoted applications.