UL Class Fuses
Eaton Bussmann CC Class, Fast-Acting, 12
You will find that Eaton products are built without unnecessary frills.
Eaton Bussmann UL Class Fuse, J Class, F
You will find that this Eaton part is a direct fit for older models.
Eaton Bussmann CC Class, Fast-Acting, 20
I trust Eaton because they have been in the business for decades.