18 in. x 1-1/4 in. Concealed Screw ADA Compliant Grab Bar in Brushed Stainless Steel

You will only be able to attach it to one stud. The other end you would have to use the included wall hardware to attach the other end.

yes

This unit does not have anchors. This must be firmly attached to a solid material, wall studs are preferable, with large enough screws.

you need to see if they make an 8 foot grab bar -- contact Home Depot

I guess if you need a hand rail would be ok

No, I did the installation my self. It is not hard to do. You could get a handyman to do the job. Price is not know.

Thank you. The screws are included.

Not sure of the grade of stainless but I put three of these bars in our shower for my wife about 6 years ago and there has been no sign of rust or loosening. If installed properly they are very safe and dependable.

You can install this bar on any particular surface, but the bar must be fastened into something strong behind that surface. If the surface is flexible, or flimsy, you need to have backup behind it. One method is to put wood blocking behind a flexible surface and screw the bar through the surface into the wood backing.

You only need a screwdriver and possibly some screws if you can't use the ones included with the bar in your situation. The only other requirement for installation to be very secure is that you have a good backing material behind the wall to screw into if you can't hit studs. In my case, I securely installed a 14.5" length of 1x8 pine board horizontally between studs centered at the height above the floor where I wanted to mount the bar. I can lift my entire 235 pound body off the floor on this bar with no movement of the bar at all. I had to fit two backer boards in two stud spaces since neither end of the bar would have landed on a stud in the location in the shower where I wanted it. My wall studs were on 16" center spacing.