Cultiwool 8" Wide Slabs of Cultilene Rockwool - Case of 12Description Cultiwool 8" Wide Slab: Cultiwool's stone wool growing slabs mark the finishing stage of crop growing. Their diverse dimensions and the ability to have plant holes pre cut into the slabs endows them with the capacity to provide a solution for nearly any growing system and for any required substrate volume per crop. Unique Fiber Orientation: The standard offerings of our Cultiwool slabs present a vertical fiber orientation. However, upon