（1）（1）The air layer is composed of two layers of fire proof curtain surface and the middle interval ≥ about 250 mm. By using the good heat insulation of the air, the fire insulation performance of the rolling curtain is enhanced, which has the advantages of light weight, good performance and low price.
（2）Material: The curtain surface is made of inorganic fire resistant cloth, ceramic fiber blanket, anti-radiation cloth and decorative cloth sewn by high temperature wire, and made of galvanized steel strip on both sides to ensure the wind resistance strength of the curtain. The bottom box seal plate is steel galvanized with a thickness of 0.8㎜ and no joint.
（3）The fire resistance of the product is 3 h, the average speed of electric opening and closing is 2 m/min~7.5 m/min, with two-step closing performance and temperature control release performance. The curtain plate type double guide rail is inorganic flame retardant cloth, and the accessories include transmission device, fire proof electric door coiler, fire proof control box, independent temperature detector, etc;
（4）The fire curtain does not require water curtain protection, which greatly reduces the investment of water supply system and saves water source. It also has the advantages of good smoke resistance, corrosion resistance, acid and alkali resistance, no aging, light weight, low price, no deformation in case of fire, simple structure and convenient installation and use.
（5）When there is no fire alarm, the rolling curtain has the basic functions of upper, stop and lower manual and electric, and the upper and lower limits are accurate and reliable
（6）Auxiliary functions: power indication function, phase-deficiency, phase-device protection function, overload overheating protection function
Suitable for industrial and civil buildings with fire proof function in which the temperature rise of the back fire surface of the rolling curtain is determined (average temperature rise ≤140℃, maximum temperature rise ≤180℃) and fire resistance limit of 3.0 h. Especially suitable for fire prevention partition in unsuitable and non-automatic sprinkler system
The basic structure and material selection of curtain surface should be strictly controlled. The air insulation distance between the two curtains must be guaranteed in installation, that is, within the ≥250 mm range.
