I did not want to drill holes in our existing house support beams so I clamped the hoist beams to it. Overkill, but it is held in place with 16 1/2 - 16 Grade 8 bolts! I used two 4" beams and mounted the hoist between them and thereby was able to get the top of the hoist within two inches of the ceiling. I will build a trolley for the hoist in time, but for now it is attached in a fixed position.