It is also work as external  structural wall, It is divided 3 types  according to structural installation and matter of safety (1) Sticky façade (2) semi unitised (3) Unitised.

• Sticky façade: It is mullion fixing with anchor and MS galvanised cleat and transom installed horizontally and after main structure build up, the without aluminium framing glass panel or ACP fixing with main frame with structural silicon.
• Semi unitised: it is installed after anchoring with MS cleat the mullion is fixed, then horizontal section fixed with mullion, after that the glass panel making with aluminium sub frame with structural silicon and finally sub frame fixed with screw with main frame.
• Unitised: it is mostly easy to installed, after mullion frame installed with anchor and MS cleat and transom fixed horizontally and factory make glass panel make aluminium sub frame installed directly main structure.