i just use mdf and get the sliding tracks from mitre 10 they cost $20 for 1600mm i use 19mm mdf so i dont need to make a frame it can be screwed together with no probs then i go see a m8 who works at a glass shop and get him to make my doors and all up just the enclosure cost $610 (that is what we charge) and that is with the rock work and a few other bits and pieces lights if you are a regular at your lps you can get discount on them
the enclosure size is 1500mmx700mmx600mm