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Old 08-06-2013, 03:46 AM   #8 (permalink)
freebeard
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From the "ACM board much better than coroplast" thread

Grimco MaxMetal 3mm
Grimco - Substrates: Max-Metal, MAX-metal

Alumacorr
Alumacorr vs. Poly-metal

Poly-metal
PolyMetal
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