I just spoke with the tech support guy at Fram about the six pack filters and he told me that they are considering making them again but he suggested that the squeeky wheel gets the grease. He suggested that if enough people wrote to them expressing an interest in them that it might get them moving on re-tooling The factory that made them no longer exists and they will need to make new dies. Here is the address of the corcorate office. Let's get writing
Honeywell Consumer Products Group
39 Old Ridgebury Road
Danbury, CT 06810, USA