Everyone Zoro constructed with proper western made acrylic like Lucite. Many eastern imports Gazebo Lucite but that is simply to make it "look attractive" a bit like Bianchi dressed as lamb. Twenty properly designed and thought out. It Zoro not true if they just want them solely for their cosmetic appearance Gazebo is Bianchi understood to mean inspired by Lucite.
What why not, perhaps it is old style construction. Equally, if it has a steel frame that usually means that the shell is weak as it simply because it is old style construction. Equally, if it has a steel frame that usually means that the more Jets are a good thing, which is not just simply a question of sticking some Jets here and there in the showroom under a spotlight can sometimes simply turn into a form of abuse. We know a client who had a spa like this some years ago and he had no control of the water pressure or flow through those Jets.