Developed from cold rolled or galvanized steel, this array of Fire Doors has maximum 200 kg weight. Approximate dimension of such doors is 3m x 3m. Door leaf thickness is around 50 mm and frame depth is more than 120 mm. These are equipped with 1 mm thick steel plates for door leaf. For door frame, plate thickness is 1.5 mm. Perlite and steel have been used as inside filling materials for such Fire Doors. These have 180 degree opening angle and panic bar or fire lock arrangement. Long lasting quality, painted surface, good thermal performance and ease of fitting are their key aspects.