What height do you need? I mean, what is the height from the floor to the edge of the tub. We don't have anything at this time that is specifically for hooking to a tub, but most of our Drs. Foster and Smith brand stair-steps as well as our indoor non-slip ramp are made to hold dogs up to 200 lbs or more. If you would like a more specific product based off height, I can give you a more specific suggestion if you can get me the height from the floor to the edge of the tub.