This is a really well made transfer bench for the bathtub/shower. It is sturdy, offers good back support and has an adjustable & very stable base and leg system.
It's quite easy to put together requiring only a phillips head screwdriver. All the screws and washers you'll need are included in the package. It took me about 10 minutes to put it together.
The bench seat is 33 inches wide by 18 inches deep. The legs use push button adjusters and can be adjusted from 16.5 to 21". Generally you will have to adjust the legs inside the tub to be shorter than the pedestal leg that is outside the tub. Each of the inner legs can be adjusted individually. The legs have silicone ends on them making them resistant to slipping.
This is designed to hold up to 400 pounds. The legs inside the tub splay out a bit giving this very good stability, something I was very concerned about. The bench seat is wide and has rounded end that makes transfer quite easy.
In my experience installing this we ran up against a couple issues... if the bathroom is small, you may possibly have a toilet very close to the bathtub. In that case, you may find this too large to enable easy entry and exit from the bench as the person's legs may be impeded by the toilet.
There is also the issue of dealing with the shower curtain. There is a definite likelihood that water will not be contained in the bathtub/shower since the bench seat extends outside of the tub. Although there is a water channel around the perimeter of the seat, it will not contain all the water. If you search on Amazon you will discover shower curtains that have a split panel that might provide a better solution. If your tub has sloping walls you may have to have this further away from the edges and/or back of the tub than you may have thought.
The handle on the one side of the bench is really great for giving the person using this a solid grab point and support point as they pivot into the tub. There is also a handy little attachment that lets you park a handheld shower head for ease of use. However you may have to get a longer hose to the handheld shower if yours is short.
I am very impressed with the quality and utility of this transfer bench.