请帮忙分析一下句子成分：

Server Cabinets是句子的主语。

have是谓语动词

additional load bearing rails 是宾语

on the front and rear of the cabinet是介词短语作地点状语

which double the weight 是定语从句修饰load bearing rails ，这是一个分

隔定语从句，就是关系代词和先行词分开了，所以难判断一些。

that can be carried by the cabinet – 1100lbs (500kg) to 2200 lbs

(1000kg) 这又是一个定语从句修饰它前面的 weight 。

主体Server Cabinets have additional load bearing rails on the front and rear of the cabinet
1load bearing rails which double the weight
2the weight that can be carried by the cabinet – 1100lbs (500kg) to 2200 lbs (1000kg