I just installed an Andersen (Emco) self-storing storm door (link below).
It is made of propylene which is not very rigid. The lips of the pocket
that the glass and screen fit into are bowed outward in the center on both
sides. This means that the pile weatherstripping of the glass doesn't make
contact at the bottom, and will allow rain to go right into the core of the
door, not to mention not providing any sealing in the winter time.
I called their hotline, and the gentleman said that bowing is normal, and
offered to send me an engineering set of tolerances to compare against. He
said that he doubts that Home Depot would accept it as a return since it's
been installed. He said that storm doors aren't meant to seal, just to
protect the entry door against the weather.
I guess I expect a little more quality and sealing ability from a storm
door. Am I expecting too much? Any suggestions on how to proceed.