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The choice of the spring is mainly for the weight of the glass door to choose different types of ground spring
Glass weight calculation method, according to the national standard 1mm thick ordinary and tempered glass, per square weight of 25kg to the current domestic commonly used glass doors, door height 230mm, width 100mm then its weight should be (2.3x1) x (12x2. 5) = 69 kg.
the weight of all the accessories plus the weight of the glass to get the weight of the whole door.