A place for everything & everything in it's place. Like the radio boxes in my other scale boats every bit of space is utilized. Once the inside is sealed with West Systems the top piece will get cut out & the step added to hold the clear plastic lid flush with the top for a nice tight seal when it is taped up. Note the clear plastic tube in the upper left hand corner that allows a clean exit of the antenna wire out of the radio box. Once antenna wire is pulled thru, a piece of heat shrink tubing on the outside end will give a nice watertight seal.