A convenient tray and cover set for seedling growth. Seedling Set, Seedling Box, Type 51 with Cover, Target Seedlings, Rashimi Trees Features: Water permeable and breathable seedling box and cover. The transparent cover makes it easy to manage, and it has excellent breathability and allows plants to grow well. Recommended for keeping seedlings warm, moisturized, frost, and birdproof. Set Contents: Seedling box 51 x 1, Seedling cover 51 x size (approx.) Seedling box (W x D x H): 14.0 x 20.0 x 3.1 inches (357 x 506 x 80 mm) Cover: 20.1 x 7.9 inches (510 x 360 x 200 mm); Material; Seedling box: Polypropylene; Cover: PET