The Marylebone Access Lift uses the bottom step as an independent wheelstop that is not part of the lift table, see On Lift Barriers for more information.
The lift table can be made to accept any cladding material, the thicker the cladding the deeper the pit depth.
Nominal Platform dimensions for this lift can vary due to site requirements. However they are more than or equal to:
1408mm (l) x 1010mm (w) x 0-999mm (h)
Please see The Lifting Actuator link for more information on the mechanism used to raise and lower the stairlift.