Wait, what? Pretty sure combustible clearance on the p43 is closer than 14". I'll have to check mine when I get home, but I'm fairly certain it was about 8".
Well, obviously I was misremembering - I'm not sure where I got that 14" for the shielded P43 - maybe it's because mine is set up just over 14" away from the side wall and it still got too warm for my comfort so I put up a shield against the wall too. For my P61, I just round up to 2' in my mind since that one doesn't have shields.