LCN Door Closer 4021 FL

The LCN Door Closer 4021 FL is shipped with fusible link arm, standard plastic cover, and self reaming and tapping screws. This closer is designed to hold open fire doors, when the fusible link melts, it releases the hold open arm, so the door will close.  Sized cylinders for interior doors to 5’0” and exterior doors to 4’0”. Non-sized cylinder adjustable for interior doors to 4’6” and exterior doors to 3’6”. Included arm has a fusible link that melts at 120 degrees, allowing to door to close. Door can be closed any time with a gentle pull.  Closer mounts top jamb (push side), specify right or left swinging door. 4021 cylinder meets ADA requirements.