I got my idea from proline cages. Ed is where my idea came from because I see his product was superior in every way compared to PVC cages but unfortunately it was too expensive for the buyer , and PVC just works. Not even trying to start this into a PVC wont off gas debate but it does 140 degrees is its tolerance before it gets structurally weaker and starts to off gas. Chlorine is the main toxin that is bad for your health in PVC(Poly vinyl chloride). As opposed to HDPE which tolerates 248 degree before becoming structurally weak and off gassing, though it's not really toxic you dont want to inhale anything.