Ferry-Morse Heat Mat in the Seed Starters department at Lowes.com
Seedling Heat Mats - Lee Valley Tools
Viagrow 20.5 in. x 8.5 in. Seed Propagating Seedling Heat Mat VSEEDMAT - The Home Depot
Gardens Alive! Heat Mat in the Seed Starters department at Lowes.com
SUNCORE A3X2, Dual Seedling Heat Mats with Heat Controller, IP-67 Waterproof, 10" x 20.75" - AC Infinity
BN-LINK Durable Seedling Heat Mat Heating Pad 20" x 20.75" with Digital Thermostat Controller Combo Set Waterproof for Indoor Seed Starting and Plant Germination - Walmart.com
VIVOSUN Durable Waterproof Seedling Heat Mat Warm Hydroponic Heating Pad 20" x 20" MET Standard - Walmart.com