Double deck gives 4 extra and a 15.65m double gives 8 extra. That for some of our stores would be the difference between 2 standard deckers with a single doing an overspill run and 2 15.65 deckers. Not often we are at full weight anyway with all the crisps and homewares so those extra 16 pallets on 2 trailers saves a run doing overspill. Big saving if you have to do a 6 pallet overspill load to the isle of wight 