Fence 15 or ‘The Chair’ is the tallest fence in the race, standing at 5ft 3in. Horses must clear a 6ft open ditch on the takeoff side and land safely on the far side. The ground is 6in higher on the landing side than takeoff side, creating the reverse of the Becher’s Brook fence.
Although most horses successfully navigate this fence it has claimed two jockeys lives. In 1862 Joseph Wynne was fatally injured during the Grand National and in 1872 George Ede died at the fence, albeit in a different race.