How high is the YouLift Bed mattress platform from the floor when it's open?

This applies to the YouLift Bed.

When fully lowered, the YouLift Bed’s mattress platform is approximately 10 inches off the floor.
With a 10-inch mattress, the total height from the floor to the top of the mattress will be 20 inches.
If you use a thicker or thinner mattress, the overall height will adjust accordingly.