Your Grodan Starter plugs, Mini-Blocks and Gro-Blocks have finally found a home. This durable Dutch tray has double-sided features. Use the 78-cell side to perfectly fit 1.5" A-OK Starter plugs or round Macroplugs. Use the mesh side for sheets of A-OK's, Mini-Blocks, or Gro-Blocks. The tray fits in a standard 10x20 flat and keeps the Grodan elevated from the bottom of the flat. Easily sanitize as any hard-plastic product; even dishwasher safe! Fits most Grodan horticultural rockwool products. 10x20in layout is perfect for standard nursery flats.