Rack & Pinion Door Closer DC680G – Rack and pinion gate closer with guide rail DC640 – Rack and pinion door closer with free-swing function DC300 Tandem – Rack and Pinion Closer DC300 – Rack and Pinion Closer DC200 – Rack and Pinion Closer DC140 – Rack and Pinion Closer DC135 – Rack and Pinion Closer DC120 – Rack and Pinion Closer