... treatment:Zinc plated.4.Different length and depth are available. Length can be 66.5,100,120,125,133cm ... ,57,67,77cm.5.Different surface treatment are available. Such as powder coated,zinc plated,chrome plated6.Different sizes are ... available. Such as 66.5x37cm,66.5x47cm,66.5x57cm; ... design or sample. Different type and shape are available.