C.E. Smith 2' Short Bunk Guide-On - Pair. 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. Specifications for C.E. Smith 2' Short Bunk Guide-On: Manufacturer: C.E. Smith Color: Silver Package Contents: C.E. Smith 2' Short Bunk Guide-On C.E. Smith 27660: 2' Short Bunk Guide-On - Pair