VEVOR Hot Tub Handrail 600LBS Capacity Spa Safety Rail Stationary Heavy Iron Under Mount Handrail Hot Rail with Sponge Rubber Grip Matte Design Hot Rail Tube for Access Spa

What is the clearance from spa wall to the inside of the vertical to clear the tub lip and spa cover? Do you have a unit that allows the rail to rotate to the inside of the spa for exiting the spa?