18” DIAMETER RAM WITH APPROX 18” STROKE. THE MAX DAYLIGHT IS APPROX 27”. CLEARANCE BETWEEN THE POSTS IS APPROX 24.5” L TO R X 14.5” F TO B. NOMINAL BED SIZE OF 24.5” X 24”. FULLY GUIDED ON 3.5” DIAMETER POSTS WITH 8.5” BUSHINGS. OPERATOR HEIGHT IS APPROX 40.5”. APPROX 3” PORT. OVERALL DIMENSIONS APPROX 36” X 30” X 85” TALL. APPROX 9,000 POUNDS. ITEM #2499.