C.E. Smith 2' Short Bunk Guide-On - Pair [27660]Carpeted bunkboards provide proper center loading even in wind or side current conditions. 2'' x 4'' X 24" boards tilt to hug the hull and are covered with high grade marine carpet. Height of 21'' with adjustment out to 13" from frame on each side. Can be mounted on top of frame for extra height. Complete with mounting hardware to fit frames up to 3'' wide x 4 1 4'' high. WARNING: This product can expose you to chemicals including ARSENIC ,CADMIUM