ROOT!T Hobby Heat Mat for Seed Trays - Medium 40cm x 60cm FREE POSTAGE - A quality electric heat mat to help your plants germinate. Has a single coil heating element - 30W. Medium size suitable for 2 standard trays. 40cm by 60cm. £30.95 Quantity: at £30.95 each Add To Basket 0 in your basket View Basket Checkout A horticultural heat mat from ROOT!T to use to heat trays unheated propagators. Size 40cm x 60cm. 30 Watts. Suitable for two standard seed trays. Warms root area to improve germination and rooting. Warms root area by between 5 degrees and 11 degrees over ambient temperatures. Fully waterproof. Durable and fray proof. Suitable for rugged and damp greenhouse environments.