I have a Tonnopro trifold cover in good condition, no tears or breaks, functions as it should.
Fits on my 2004 Tundra, probably fits more (I'll try to get some dimensions)
*Looking to trade towards a nice black diamond plate toolbox*
Me too. My toolbox stays on 95% of the time. I take it off and put the tonneau on for trips.
When the toolbox is off, I pressure wash the bed (it gets nasty under the box) and wax the top of the cab. It’s a lot easier with the box off.