Prime-Line MPKC31US Concealed Door Closer, 6 inch, Brass Face, Spring-Loaded, U.L.O. Listed, (single pack)
- Used to pull fire doors (and others) closed.
- Chain base features a chain clip holder to prevent free-swinging chain when not in use.
- These secondary security chain door locks allow for safe ventilating and opening of entry doors.
- For further dimensional information, please see the line drawing.