We are using a 128 cell tray for lettuce and greens right now is looking at a similar sized tray from Proptek which has 144 cells. The cell size is actually the same, but they fit more cells per tray because they don't need a rolled edge on the tray for strength like regular thermoformed trays have. You can check them out at http://www.proptek.com/pages/vegetables/trays/index.php?ref=144N10N. The issue is that the 144s are made in California and the freight quote I got was $2500. Proptek also makes a tray in Montreal which is a 231 count. The cell volume is about 60% less. From the little I know about it, it seems like most growers out West use much smaller cells than we do here for lettuce and greens. Everyone I know in this area uses a 128 or similar tray for these crops. Do you think we could get away with a 231 tray for these crops? Do you know anyone using a smaller cell tray for lettuce?