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Old 30th Aug 2019, 1:03 am   #6
Herald1360
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Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,528
Default Re: Grey insulating cardboard

Sounds like what I knew as "Elephantide"- a stiff grey-blue card like sheet material.

Try this: RS Stock No. 775-7790
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