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The walls keep the distance between lower layer of styrofoam and upper layer.
 
 
 
 


 
 
 
 
 



 
 
 

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Dr. Hans-Peter Grotepass
Gudrun Grotepass

Schloss-Strasse 68     45355 Essen / Germany 
Phone (from USA) : 01149  201- 651112 
E-mail: Info@Tiffany-Studios.com