hey darl perspex is 7 times stronger than glass, it could be more forgiving than a sheet of glass if pressure was applied even accidentally especially at that size but it does have its bad points, it can flex a bit anyway i had 3 pieces of perspex cut up in tullamarine for $80.00 which was for 2 doors at the front plus one side section of my enclosure which is also 6 foot wide. if you use glass i would be using something pretty thick but that will be pricey but perspex leaves fine scratches very easily. if you want the address where i got mine cut up just pm me. good luck and it definitely has potential