Purpose: Channel ports, one-way doors. ◇: automatic locking one-way, and can be combined with the electronically controlled locking plate apply. ◇: Due to the outside handle is always a fixed state, automatically locking door. ◇: usually with bolt handle control oblique indentation is unlocked from the inside. ◇: From the outside of the control key to indent the oblique bolt lock. ◇: oblique tongue can be controlled with a key to indent and can remain in this state, if the door is open due to oblique oblique bolt latch release feature allows restitution can unlock and open the door with one hand. ◇: Mounting distance: 51 ◇: Door Thickness: 33 ~ 42, 42 ~ 50 and 50 ~ 58, 58 ~ 66