Plant Seed Tray Kit Jiffy, Easy Grow Greenhouse, 11" x 22", Plant Seed Tray Kit, Includes 72 Cell Insert, Reusable Tray, Clear Plastic Dome, Includes Superthrive A Kelp Based Vitamin For Plants & Plant Markers. SpecificationsSize: 11 x 22 in.Country of Origin: United StatesWeight: 14 lbs