Swingdoors... effectivly separates two different environments,
but at the same time allows free passing between them.
Ex. cold against warm, clean area / dirty area, noice / silence. 
It doesen´t rust, rotten or absorbes moisture.

Carbo swingdoor transparent
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CarbOpal swingdoor
white door with window
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CarboSafe swingdoor
Security swingdoor
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