Here's most of the info, the material is 1 and 1/8th wide by 5/8th thick. The holes are spaced at 7 and 1/2 inches starting at about 1 and 1/8th from the front. Mines the big one man but I used the Otter runners from the next one up, just cut them a bit shorter. I'm guessing yours will be 46 inches long, just measure from the cavity where they go at the front to the end of the raised rib at the rear.