Rockwool
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$8.99
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$11.57
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Grodan Starter Plugs Sheet
Grodan
$21.93Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different...$21.93