Problem with replacing defrost heater element

I have a bad defrost heater element in my GE refrig, tfx22kpdaww. I got the part to replace the bad one but the new part is a double element and the old is a single element. The double element is larger and seems to not fit. From what I understand GE intentionally replaced the single with the double so can anyone tell me what is the best way to either get the larger one to fit or how to find a single one?

Thanks