Professional Plant Functions:Transparent seed tray lets you keep an eye on the growth. Drain holes at bottom for better drainage. A convenient handle is specially designed on the lid. Perfect Size and Height for Seed Starting: 4 pack total 48 cells, suitable for small seeds. Increased the height of the lid to provide ample room for flowers, vegetables, fruits, herbs and other plants to grow. Compatible with Heat Mat & Plant Light: Can be used long-time in the temperature range below 48C. A great way to foster a beautiful and healthy garden. Good helper for starting flower and vegetable seeds indoors or fruits, trees and other agricultural cultivation. Unique Design: Bottom trays of our seed starter trays can be stacked one by one to save space. Therefore, you can stack the bottom trays before the seeds germinate to save your operating space, whether indoor or outdoor. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store