These plate hooks have been designed to conveniently install on a ceiling, veranda, gazebo or any other structure that can sustain a weight of 450 pounds. Securely fasten the hooks using the 8 included 1-1/2 inch wood screws in support beams that will be able to handle a load of at least 450 pounds. Please consult an engineer if you are unclear about the load bearing potential of a post or beam. Zinc-coated hardware with poly-resin anchors.