The video below shows some double deep racks being loaded with a forklift. As you can see in the video, the forklift has specialized forks that telescope into position.
At full extension the forks can reach the back pallet space, but when they are fully retracted they are the same length as a standard forklift. This way the forklift maintains it’s maneuverability when being used throughout the warehouse.
I looked for a video that would really show what a double deep pallet rack was, and how they were set up. I was pleasantly surprised to see this nifty forklift extension. It’s a great little video.
[youtube]http://www.youtube.com/watch?v=U99nP6IymA0[/youtube]