I'm going to replace an exterior door and hoped to buy a prehung steel door at my local home center. Only issue is jamb size - the home center only has doors on hand with 4-9/16'' jams. My jam size is 6 9/16'' which they tell me would be a special order.
Can I cut some jam extensions and use the prehung 4-9/16'' inch unit? Would that require taking apart the prehung assembly to assemble?
Any advice is appreciated.