FOUR SIDES HAVE INSULATION WITH METAL WRAP. 31.5” X 31.5” OVERALL WITH INSULATION. THERMOCOUPLE PORT ON REAR. 1” INLET AND OUTLET PORTS ON REAR WITH CENTERLINE LOCATION 2” IN FROM EACH SIDE. PLATENS CAME OUT OF A 200 TON MULTIPLE OPENING WABASH. 1” DIAMETER HANGER RODS AND 3 INTERMEDIATE PLATES (48” X 30 X .75”) WITH 3.5” GUIDE HOLES (FOR TIE RODS) ARE AVAILABLE. TWO 30” X 30” PIECES OF INSULATION ARE AVAILABLE. TOTAL QTY OF 5. (ITEM #1322)