Backcheck Heavy Duty Delayed Action Door Closer

* Precise cast aluminum body & steel arm, hold open arm optional

* Adjustable closing & latching speed

* Adjustable back check, delayed action & hold open function optional

* Non-handed installation

* Adjustable spring force #1-6

* ANSI 156.4 certification 2 millions life cycle

* UL 10C certification 3 hours fire rating

On Oct. 10^th, 2011, Dorrenhaus’s door closer manufacturing base in China - Zhejiang Dorrenhaus Hardware Industry Co., Ltd. was formally founded. All members of management team have more than 15 years experience in door closer industry.