The dynamical behaviour of a radially outward moving vertical liquid sheet is examined experimentally in the present work. When a cylindrical liquid jet impinges orthogonally on a single slotted cone-disc deflector, two liquid sheets form simultaneously- a circular liquid sheet issues at the solid part of horizontal deflector and a vertical sheet forms from the slot of the deflector. Since the radially expanding sheet has been studied more extensively, the present work focuses on the radially outward moving vertical sheet. The goal is to correlate the breakup events at leading and lower edges of the vertical sheet to the dimensions of ligaments and droplets that are formed. High-speed shadowgraphy at 5.4 kHz framing rate is carried out simultaneously to observe the front, side, and top views of the vertical liquid sheet at different jet Weber numbers over the range 523 < Wejet < 3786. It is found that the breakup distance of the leading edge increases with the Wejet. Further, in the vertical sheet, the surface tension force is stronger at the lower edge as compare to leading edge, which causes ligaments and droplets larger in size as compared to those produced from the leading edge. The droplet D32 or Sauter mean diameter (SMD) from the leading and lower edges is measured and found to follow Wejet −1/3 powerlaw. Correlations are obtained between the D32 at the leading and lower edges with Wejet, ligament size, sheet thickness and breakup distance. © 2018 Solar Turbines Incorporated.