1、Passed ANSI / BHMA A156.4 first-class requirements
2、Passed UL228, UL10C (3h fire protection) certification
3、Exit door or fire door must adopt the door closer without the hold function
4、It can be used on both left and right side door
5、Only for single-open, and suit for wooden door, metal door and frame door etc
6、Door opening buffering function: When the door opening angle is greater than 65°, there will be obvious resistance for opening the door
7、Door opening torque adjustment function: By adjusting the number of turns of the torque
8、Regulating valve, the requirements of different door widths and weights can be accorded
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