Botanicare® CT Middle Tray 4 ft x 4 ft - White ABSBotanicare CT Trays are customizable grow trays made from ABS plastic. The sidewalls on these versatile hydroponic grow trays are 2. 5 inches high, an ideal height for environments with drip irrigation. Because we know no two grows are alike, these trays come in a wide range of lengths so you can customize your system for your setup. Choose between 4 foot (1,200 mm) and 5 foot (1,500 mm) widths, and combine a Drain and End Tray to create an 8 foot