VIANS VI-S203 80KG Concealed Door Closer – Hydraulic Fire Door Closer with Hold-Open, Adjustable Speed, EN3-4 123-sum One amplifier capacity of 6

One amplifier capacity of 6 remote paging microphones DA-500RM up to 300 meters

and applications

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VIANS VI-S203 80KG Concealed Door Closer – Hydraulic Fire Door Closer with Hold-Open, Adjustable Speed, EN3-4 123-sum One amplifier capacity of 6The VIANS VI S203 is a concealed hydraulic door closer designed for fire doors and commercial applications. Installed within the door leaf and frame, it provides controlled and smooth door closing while maintaining a clean appearance and reducing vandalism risk. Product Parameters Model VI S203 Product Name Big Door Closer Lock Size 205 42 64 mm Fix Size 188 19 mm Max Door Weight 20 40 kg Max Door Width 1100 mm Max Opening Angle 180 Spring Power EN34