Let's start by stating I live in MA. I have purchased but do not have a Quadra Fire Classic Bay 1200 F/S system it is in stock at my dealer and he is holding it for me paid in full of course. Installation is on the first floor and the question is: Venting instructions on the CB1200 (page 10) state "Distance from doors and opening windows, or gravity or ventilation air inlets into buildings: a. Not less than 48 inches below; b. Not less than 48 inches horizontally from; c. Not less than 12 inches above. My problem is that I have exactly 96" from corner to corner of windows that open, the window that the room will be in has a measurement of 54" from opening corner of window to wall, dealer states I need 57" minimum. Am I screwed or what. Now looking at Harman venting instructions they state the above, but mention (page 19 Harman Accentra Manual) "With outside air installed, the clearances are 18" to the side and below and 9" above." What exactly is "outside air installed" meaning? And could I use the same venting with the CB vs the Accentra? I hate to ask the dealer he seems to be so busy that he hasn't got time for these types of questions. And according to my towns building inspector he looks at the unit after installation with manual, I would show him both manuals and refer to this so called "outside air installed" situation for approval and the insurance companies approval also. I cannot move the stove to a different location as I just did the floor over in hardwood and installed tile into the corner where the stove is to go. Thanks for the help, ASAP.............!