You are here: PRODUCTS / Door Closers / Heavy traffic door closers Heavy traffic door closers Heavy doors locking devices are designed for tough surveying conditions including frequent and intense passage. DC200EN 2-4 80 kg / 1100 mm Rack & Pinion technology. DC300EN 2-6, 120 kg / 1400 mm Rack & Pinion technology. DC340EN 3-6, 120 kg / 1400 mm Rack & Pinion technology. DC347EN 5-7, 160 kg / 1600 mm Rack & Pinion technology. DC500 Cam-Motion®EN 1-4, 80 kg 1 100 mm, drive cam technology. DC700 Cam-Motion®EN 3-6, 120 kg / 1 400 mm, actuating cam technology.