Metal Stud Fastener Kits can be used to attach to a single stud only when weight of mount and equipment does not exceed 35 lb. Metal stud fasteners can be used on double stud Peerless-AV mounts only where specified. See specific models for quantity needed and compatibility. Can be used to attach loads greater than 35 lb only where specified for Peerless-AV models that contain a wall plate which spans two or more studs.