Fulton Trailer PVC Boat Guides 44" Pair #220-GB440101 Help center your boat on the trailer quick and easy with self-centering boat guides. Marine grade PVC up rights help prevent damage to your boat. High strength mounting brackets attach firmly above or below the trailer frame for maximum mounting flexibility. 16' of adjustment on each side ensures a custom fit on any trailer, while 44' height improves trailer visibility while backing up. Fits on trailer frames up to 3' wide and 5' high. Easy bolt on mounting, no cutting or drilling required. Posts measure 2-3/8' O.D. at top end. All mounting hardware and instructions included.