-New product with excellent performance, Up-To-Date trigonal Design In Compact Size.

-Easy Installation - The Tool You Need Is A Screwdriver Only-High Quality Cast Aluminum Alloy Case In Compact Size.

-Easy To Adjust, 2 Closing Speed Valve.

-Universal Application.For standard, Top-jamb or parallel arm installation.

-The Standard Track Arm (T3M) is optional.

-Power size can be select from 1, 2, 3 in same body size