VEVOR RV Steps, 4-Step RV Stairs, 199.58KGS Load Capacity, Thickened Carbon Steel, With Handrail, Non-Slip Steps for Safe Entry and Exit, Suit for RV, Trailer, Camper Steps

What height are they? And do they get hot I .the sun as wanting to use as spa steps for my sister who has a disability.

Are they portable? Can they be dismanled and re erect for travelling to different locations? Thankyou