Grow your own vegetable, flower or herb transplants in this half width starter kit that fits nicely on many windowsills and shelves. This kit comes with waterproof tray, humidity dome and 36 cell plastic insert. Ideal for getting an early start on the season when space is limited. The kit is 15 cm (6″) wide by 53 cm (21″) long. . 1 kit $4.69.