Mount in overhead or vertical position only. Do not mount with side pull on bar greater than 30 degrees off centre line of bar. Anchor to structural steel with 2 3/4" (20mm) diameter A325 Bolts. Or Anchor to sound crack free concrete with min. 28 day compressive strength of 3000 psi (920MPa) with 2 Hilti HSL M16/25 316 Anchor bolts. The minimum size of structural member this anchor plate can be connected to is a wide flange shape.