Radiant Passive Plate type Auto Sliding Door is fabricated from mild steel sheet having thickness of 6 mm. The Auto Sliding Door comprises of sliding rail, made from 75 mm X 75 mm X 5 mm angle to guide the panel, fusible link, wire rope, bottom rollers to guide the panel at the bottom, counter weights etc. The Auto Sliding Door is always kept into open position and at the time of fire break, fusible link melts which allows the counter weight hung to the wire rope to pull the panel automatically close and to prevent fire from spreading further. Radiant Passive Plate type Auto Sliding Door can be availed with automatic powered operation options like electrical, hydraulic, pneumatic, PLC controls and interfaces.