what is LHR

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The 98/99 rim device can be converted to double cylinder 98-2 or 99-2. Double cylinder features an inside key cylinder which locks or unlocks the outside trim (Classroom Function) and an outside c...
Changing the handing on a Von Duprin 373L trim requires following parts: LHR to RHR requires 090092 ( Package of 4 springs ) and 050597 ( back plate assembly ). RHR to LHR requires  090091 ( Pa...
The part number depends on the handing and finish of the device:  RHR, US28 is #4270107321  LHR, US28 is #4270107323  RHR, DC13/DC35 is #4270107320  LHR, DC13/DC35 is #4270107322.
A  LHR (left hand reverse) door uses a RH (right hand) door closer. A RHR (right hand reverse) door uses a LH (left hand) door closer.
A door can be handed in several ways. The easiest way is to stand on the Push side of the door. Push the door away from you as if you are going to walk thru the opening. If the hinges are on yo...
To determine the hand of a door, view the door from the outside, security side or key side of door.  Once there identify which side are the hinges located on the, right or left side of t...
Go to the push side of the door opening.  See above illustration. If door swings out to the left, it needs a left hand door closer. If door swings out to the right, i...
You need to purchase the 050388 (RHR) or 050389 (LHR) and specify the finish.
The 98/99 rim device can be converted to double cylinder 98-2 or 99-2. Double cylinder features an inside key cylinder which locks or unlocks the outside trim (Classroom Function) and an outside...