•78-cell side perfectly fit 1.5 in A-OK Starter Plugs or round Macroplugs.
•Use the mesh side for sheets of A-OK's, Mini-Blocks, or Gro-Blocks
•This durable Dutch tray has double-sided features.
•Ideal for Mini-Blocks and Gro-Blocks
•The tray fits in a standard 10 x 20 flat and keeps the Rockwool elevated from the bottom of the flat