Posting this here as I had a difficult time trying to find a correct size tote for a stock RadExpand 5. I purchased this at Home Depot for $60. Nice to have it on wheels for rolling the tote around.  No need to buy folding pedals. Fits great! The right pedal is just touching side of  bin. Had to lower handle bars to place in my Honda oddessy van.

Stock RadExpand 5 except for 14"x12"milk crate added to rear rack. ($6 menards) Photo taken with seat and battery removed for easier lifting.

Hope this helps anyone who has been  looking for one. HDX 70 Gal. Tough Storage Tote with Wheels in Black with Yellow Lid.