MODEL 12-12-2T. SERIAL #235. ADJUSTABLE DAYLIGHT OF APPROX 2.25” TO 11.25”. CYLINDER IS 2” BORE WITH 6” STROKE. GUIDED ON 1.25” DIAMETER POSTS. CLEARANCE BETWEEN THE POSTS IS 13.75” L TO R X 7.75” F TO B (13” X 6.75” BETWEEN THE NUTS). OVERALL DIMENSIONS: 19” X 19” X 43” TOTAL. APPROX 350 LBS. (ITEM #1538)