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Most door hardware products are design to fit standard door preparation as illustrated on the left. If you have something different, please start with our hardware replacement guide at the link below.
How Institution/Asylum Function Works: Both inside and outside lever always locked. Dead locking latch bolt operated by key on either side. Works similar to a storeroom lock where key is used to open but remains locked when the key is removed - functions this way on both sides.
Advantage Commercial Institution Function Knobset
Applications - For offices, schools, hospitals, apartments, hotels, motels and other public buildings.
How Double Keyed Store Door Function Works: - Keyed cylinder on both sides. So if one side is unlocked with a key, the other side will be unlocked and vice versa.
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