CLOUDLINE S10, Quiet Inline Fan 10" with Speed Controller10 x 20. 75 Seedling Heat Mat with Digital Temperature Controller Available at Holland Horticulture, this 10 x 20. 75 seedling heat mat provides precise, gentle warmth to improve seed germination and early plant development. Designed for propagation trays and small grow setups, it helps create stable rooting conditions for faster and healthier growth. Key Features Compact 10 x 20. 75 size ideal for seed trays and propagators Digital controller with