The use of 3mm Alpolic LT or 2mm and 3mm Dibond is recommended in highly complex internal situations.
Curving, cutting, folding and fixing is often much easier to control in these low exposure situations.
Sub framing may be of aluminium or timber and adhesive fixing is common.

Examples of internal applications:-

Living Well - 3mm Dibond - Plasma Screen Cabinet.

Flight Centre - 3mm Alpolic® LT - Display and Corporate feature.

4mm Alpolic - Medium Grey Metallic - Westfield Chermside

4mm Alpolic - Apple Red Mirvac Building - Chemist Southbank