The XTray is designed to keep plants vibraant, well-irrigated, and always at their healthiest. Featuring grooved FLO-THRU channels, XTrays are available in multiple sizes from 2' X 2' to 4' X 8'. The XTray is designed to keep plants vibraant, well-irrigated, and always at their healthiest. Featuring grooved FLO-THRU channels, XTrays are available in multiple sizes from 2' X 2' to 4' X 8'.