Door closers pull doors closed once they've been opened and released. They are used on fire doors to help prevent the spread of flames and smoke in the event of a fire. They are also used to keep out drafts and regulate room temperature in interior spaces.
Dexter Door Closers
DCH1000 Interior and Exterior Heavy Duty
DCH1000, DCL2000, DCM1000, DCR8000 Interior and Exterior Light Duty
DCL2000 Interior and Exterior Light Duty
DCM1000 Interior and Exterior Medium Duty