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Built-in Heater: iPower Heating Propagation Tray comes with a vented humidity dome, which can help regulate moisture and temperature for your germinating seeds. It is designed with built-in heating element and 100% waterproof construction
3-in-1 Design: Flat tray, cell tray and humidity dome, 3-in-1 design. 24 Cell plug insert seedling tray with round drain holes fits snugly in the propagation flat tray. Overall size: 15. 1"L x 9. 5"W x 7. 5"H, easy to carry around and transport