IIRC the 425 is the one without cabinet doors just an open shelf underneath? But the head is the same as the 450. If so it a very good piece. However give it a good going over before you spend anything. If the firebox is bad (not common) you cannot get replacement parts
Thanks! You're right, there is a shelf instead of a cabinet.
Do you mean you can't get a replacement firebox or you can't get any interior parts like burners etc..?