This little change came about as part of my custom work on my 3880 fire engines.
I find that the roller shutters on the 3880 are a bit too low and as a result you cannot make maximum use of the storage space, or if you do it is difficult maneouvring items out. This is most obvious with the traffic cones and so I've used these and a fire extinguishers as illustrations, but the same problem arises with other items when the roller shutter means that you cannot easily (if at all) have two items one above the other.
First, are pictures of the original roller shutters in place. The words "left" and "right" refer to the side concerned when standing behind the fire engine and looking towards the front. As you can see, the problem is most acute on the left side where the top of the storage area "doorway" is lower than on the right.
The next two pictures show the altered roller shutters in use.