Vertigo Top PlateA Vertigo Drop Seeder needs both a bottom plate and a top plate. The top plate captures the seeds and comes in many combinations of tray type, cell number, plate thickness, and seed hole size. The Vertigo Top Plate is not a cheap sheet of Acrylic like every other seeder on the market. These are carefully designed pieces specially made for the Vertigo seeder. They are made here in Cookeville TN and then annealed in our shop to be perfectly flat and