I wanted a lift to lower my 40" tv from the ceiling from my loft into my bedroom and it works perfectly im really pleased with it.it took about 3 hours and some carefull measuring and cutting but found it fairly straightforward to do i just mounted the tv and lift on a piece of 1" chipboard that i had previously fixed securly in my loft vertically to the joists and rafters then built a box around it and all works a treat.
I have no special training on the installation as im a plumber by trade it just takes a bit of common sense and planning.
Now my bedroom looks like something out of mtv's cribs!!