VEVOR Sit Up Bench, Decline Ab Bench with Reverse Crunch Handle, with 4 Adjustable Height Settings, Heavy Duty Steel, 1000 Lbs Capacity, for Home Gym Workouts, Strength Training, Full Body Muscles

84 cm is the lowest height setting, which is nearly flush with the floor; it cannot be adjusted to be completely level, as it is essentially a bench press. If this answer does not resolve your issue, please contact us again for assistance.