Whirlpool Fridge & Freezer Defrost Heating Element481902188177

Afternoon We have an American style fridge freezer the make is a Frigidaire. It's 15 years old + but in brilliant condition. The defrost heater element has stopped working. We have had the part removed and it looks very similar to this one ( Part No. (RS144164) Would it be possible to have the dimensions of this part ? Would very much appreciate your help Kindest regards Tricia