Designed exclusively for the X-Gard snow retention system from S-5!, the X-Clip II & X-Clip III are optional components that can be added to your X-Gard 1.0 or X-Gard 2.0 system to further retard the migration of snow down the roof. X-Clip has a special integrated rubber foot to prevent abrasion of the roof panels finish. The X-Clip rests on the back of the NEX® 2.0 Pipe and extends down to rest on the flat of the roof panel. X-Clip II is used on roof panels with seam (rib) heights of 1″ to 1-3/4″. It will also fit on 2″ vertical seam panels, but not on 2″ horizontal seam panels. X-Clip III is used on roof panels with seam (rib) heights of 2″ to 3″.