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North American style, suitable for residential and commercial doors.
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Solid cast aluminum alloy body.
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Superior quality control, comply with America BHMA/ASNSI A156.4 Grade1 and pass UL test.
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Multi-sized power and back check function.
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Closing and latching speed adjustable.
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Needle bearing produces super smooth operation
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Excellent seal ring and hydraulic oil; Anti-freeze oil is optional.
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Universal installation for regular arm, top jamb application and parallel arm(optional).
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Finish: silver, bronze, golden, white.