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Originally Posted by coastertux
The "official" tetras are also painted wood. Check out the FIRST Documentation section of the website for the exact building specs.
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The official field element vision tetras that will be used by first at regionals and the championship event are not painted wood. They are made of 1/4" of HDPE with an adhesive bright green vinyl sheet that will be on the outer face of the HDPE.
You can find this
HERE