CORE HAS 2 ROWS OF 1" TUBES ALL ALUMINUM AIRBOAT RADIATOR WITH UPPER RIGHT INLET AND  LOWER LEFT OUTLET HEAVY DUTY TALL SIDE CHANNELS FOR SECURE MOUNTING NO FILL NECK MEASURES 31 x 21 OVERALL Inlet : 1-1/2" Outlet: 1-3/4" Core Dimensions: 26 1/4 x 18 x 2 1/4

This is our IN STOCK radiator that we keep on the shelf but other sizes & options can be quoted upon request.