APPROX “HEAT AREA” IS 74” X 38.5, HOWEVER WITH HANGING BRACKETS, ETC…THE OVERALL DIMENSIONS ARE APPROX 78” X 43.5” (SOME MAY BE ABLE TO BE CUT OFF). TWO APPROX 1.25” INLETS DIAGONAL FROM EACH OTHER ON 74” SIDES (APPROX 12” IN FROM ENDS). (QTY 3) (ITEM #1627)