please do check size and model number
14inch Galaxy Book3 Pro NP940XFG:312.3 x 223.8 x 11.3 mm (12.30″ x 8.81″ x 0.44″)
16inch Galaxy Book3 Pro 360 NP960qfg:355.4 x 252.2 x 12.8 mm (13.99″ x 9.93″ x 0.50″)
16inch Galaxy Book3 Pro NP960xfg: 355.4 x 250.4 x 12.5 mm (13.99″ x 9.86″ x 0.49″)
16inch Galaxy Book3 Ultra NP960xfh:355.4 x 250.4 x 16.5 mm (13.99″ x 9.86″ x 0.65″)
please do check your laptop model number