I found that address for the screen maker, although is from 1997. It is:

Triad Magnetic Van Screens
4155 Friendship-Ledford Rd.
Winston-Salem, NC 27107
(910) 769-2427

The prices, again from 1997:

#VS109 frt window screen   $29.95
#VW203 sliding window      $26.50
#VC590 sliding dr w/zipper  $51.86
#VR302 rear hatch             $47.03

I guess prices are subject to change, if the place is still available.

Hector