I am trying to replace my old thru-the-wall air conditioners. I have one in the living room and one in the bedroom. The one in the living room is a GE model# AJC09DAT1, it is 8500 BTUs. The one in the bedroom has no model # or brand but it is in the same size sleeve. Do you currently have air conditioners that will fit in these sleeves? I need one that is between 5000 to 6000 BTUs and a 12000 BTU. Thank you for your time.