Best quality: high-quality hydraulic door closer is made of commercial-grade aluminum alloy, hydraulic operated, totally automatic closing, speed adjustable, gives you an easy and safe life, protects your door and lock. note: this door closer doesnt support the hold-open function.and
all-purpose adjustable: works with all types of medium doors — right or left opened doors, wood and metal doors, residential and commercial doors, home or office use, and fire doors, exterior/interior door closer.and
application scope: door closer