Equally motors are mounted on steel strut channels which might be anchors by means of lag screws on your own attic's flooring joists/rafters. A fantastic products. Hired a reliable carpenter to aid me but I continue to did about 60% of your perform myself. This detail is a good addition https://lanezfmsy.wikievia.com/9825305/helping_the_others_realize_the_advantages_of_attic_lift