White Vertical Side Mount Rod Holder by T-H Marine®. The Rod Holder is injection molded of UV stabilized poly material for strength and durability. Holes are provided for screw mounting either individually or in multiples on a rack. A slot is provided for the reel to slip into to prevent the rod from moving. The Rod Holder is 11-3/4" long with an inside diameter of 1-7/8". The spacing between the two mounting holes is 6-1/4".