This is a professional growing sysytem designed to grow tube stock for wholesale nurseries, It is a galvanised steel frame which houses 20 hyko trays which are cell trays which grow 40 plants in each tray. These frames keep the trays approx 20 cm of the ground to allow proper air pruning. They are stackable, to be used also for delivery racks. They are also ideal for the home gardener to grow all there vegetable seedlings and any other plants that they would like to properate. THIS IS PICK UP ONLY Can hold upto 800 plants Comes with 20 Hyko trays Dimensions: L 5ft W 3 ft more info