Note for the installation of balcony glass railing clamp: Generally, the guardrail should be made of tempered glass or laminated glass. When tempered glass is used, its thickness should not be less than 13mm. Because glass is a brittle material, the glass must not be in direct contact with rigid nodes. There should be an elastic material liner between the two sides. When the design adopts two-sided glass guardrail, there should be a gap of more than 3mm on both sides of the glass extending into the column slot. The gap should be filled with sealant, and the glass slot should not be less than 13mm.