Hydrofarm Propagation Heat Mat 48 x12 Daisy Chainable 60WProduct Details Bottom heat is one of the most important and effective enhancements to germination and rooting. Our Propagation Mat warms the rooting area to approximately 10F 20F above ambient temperature, which markedly improves germination rates and rooting success. The Propagation Mat is 48" longperfect for placing two standard trays end to end, and ideal for placement under 4 foot fluorescent fixtures. At 12" wide, it also ensures that the entire