5er toolbox needed

[Taurus18]

I'm looking for options/opinions for a 5th wheel style tool box. I'm thinking a maximum size of 48"x18"x18" and could possible go a little smaller that will go in the front of the bed.
Thanks!

[bogart661]

Also have the same Husky box in my shortbed Chevy and it works great.

[RollandB]

Found mine used on Craigslist. Pretty much like the one shown. Having an extended cab truck with two dogs and grand kids on occasion I wouldn't be without it. Comes in handy when not towing to have a place to keep groceries out of the rain when the dogs are with is. When towing I keep leveling blocks, Sat TV stand in it with some other misc stuff. The tray has lots of little things and slides to both sides. My only option is to get as big as will fit, like storage cubbies, it fills fast

[rhagfo]

I picked up one at Lowes(could have been HD). It sits just below the rails.