Rockwool Grow Cubes (DM 10 42/40) 6 Cube Sheet 4 in X 4 in X 4 in Rockwool Grow Cubes by Grodan - DM 10 42/40 4" X 4" X 4" Wrapped cube with hole (Use with RW140). This is sold in sheets of 6 cubes. For a full case, order 24 sheets.