HS24NGRFKIT (23”W X 26”H) 24” RETRO FIT KIT – These dish heaters have a built-in sensor that turns the heater on in freezing conditions. The self adhesive heating element sticks right to your dish. This will help prevent service outages due to signal loss caused by the buildup of snow or ice on the dish. Includes everything you need: 100 Feet of Cable, Thermostatic Temperature Sensor, Easy To Follow Instructions, Durable All-Weather Material, Safe Low Voltage Power Supplies, 1 Transformer Connection. Note: The LNB heater is Optional.