I have a 2015 144" van that has been converted into an RV. I have a step that pulls out manually by the sliding door. It needs to be replaced. It is 8" deep when it is extended. I would like to get a running board that includes the passenger and driver door. I have looked at luverne, sprinter parts depot and sprinter world. I want something deep and non slip! the step I have now can get pretty slippery when wet. it is hard to buy something like running boards on the internet so looking for some advice... Luverne has a 9 inch deep one and sprinter parts depot has one that is adjustable. I have no idea what Nerf means but looks like the non skid surface is not to the edge so might end up being slippery. thanks for comments and advice! diana