Has Anyone Used This Bulkhead?

[Raul-7]

Has anyone had expierence with the Pentair Aquatics bulkheads? I'm particularly interested in the clear models. How durable are they - worse than the Schedule 40 or better?

Here's a link: http://www.drsfostersmith.com/Product/Prod_Display.cfm?pcatid=4009&N=2004+113786