I purchased this approximately 18 years ago and have kept it in storage without using it. It seems it is no longer sold, so I don't have any further details. For reference, my bathroom is the SX series, size 1818, with an egg-shaped bathtub. *Regarding the listing category, it is listed under "Nursing Care Supplies," but this product was not originally sold for that purpose. Please be aware of this. Bathroom board, bathtub board, National, Panasonic, bath board, half-bath platform, bathing platform, decluttering