This is totally dead wasted space. It is covered by an oak vent and appears to only vent from the hot water tank and furnace storage area. I used 2X6 wood to get the height and attached the 12" drawer slides to them. I then built the tray with 3/4" plywood and attached this to the oak vent as the drawer front. A great place to store pots and pans. Next to it I removed the panel under the fridge and moved the propane detector to the wall next to the step. I could not find a factory made oak vent to match the other one so I made it with a router. I then attached this to the basket system that was under the sink from the factory. A great place to store fruit and veg. Note the bottom step that I hinged and store the hose and accessories for the central vac which is beside the step.
George & Andrea

