Our B+ came with a Round Storage tube in the sidewall that would hold a 6' length of sewer hose without fittings. I modified the tube from round to 5" square fence post by removing the round mount on the inside of the hatch, just fits a fence post cover, that was screwed and glued to the original hatch. I also have a 60" fence post cover that is fastened to the side of our coach mounted ladder and on top of the bumper, it holds about 15' of capped sewer hose. It is mounted using conduit straps and sets on a rubber toilet gasket on the bumper. I have a group of 5, 3 gallon plastic tubs that stack in a tall narrow hatch beside the entry door. One holds misc, one holds sewer connectors, one holds potable water connectors and hoses, one holds misc tools, the last one holds outside supplies for the campsite. In this small compartment, I also store two folding camp chairs, a bottle jack, lug wrench, sewer hose support and door mats. Size of the compartment is about 24"x20"x65" tall.
