MARSHALL STAMPING JP16 - 1'0"-1'4" ADJUSTABLE JACKPOST - ADJUSTABLE COLUMNS ADJUSTABLE - SHORT MODELS EXTEND-O-POST ADJUST IN=12 TO 16 CAP LBS=18,200 - USE FOR SUPPORTING SAGGING FLOORS, WEAK BEAMS AND WARPING STAIRWAYS. 2-1/4" X 15 GAUGE PRIME STEEL INNER TUBING. 2-1/2" X 15 GAUGE PRIME STEEL OUTER TUBING. 2-1/4" STEEL COLLAR. 1" X 6" STEEL SCREW. TWO 4" X 4" X 10 GAUGE STEEL PLATES. 7" TURNING HANDLE. GROOVED PIN AND PLAIN PIN. FLOW COATED WITH RED CORROSION-RESISTANT PAINT. PACKED WITH INSTRUCTIONS. UPC SYMBOL ON CARTON. MAXIMUM LOAD CAPACITY OBTAINED AT LOWEST EXTENSION. - EQUAL TO 6975429