Quote Originally Posted by mm91187
i've been wondering the same too.

I'm not sure what it means by "raw unit" and "receptacle end"

Both the Johnson and the Ranco cost the same, out of the two which yall reccemmond?
A raw unit needs to be wired up with a receptable for the heating element to plug into (can be done easily with a little electrical knowhow) and a receptable end has the outlet already wired up. Can't go wrong with either...