Making cover for TT underside.

Refer to this, same applies

http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/27201981/gotomsg/27204076.cfm#27204076

Coroplast sheets....plastic cardboard

Check Home Depot, Lowes for 4 X 8 sheets

And some self taping screws........lots of them

Got it. Thanks for the help...

Ron,
Coroplast is what is under mine. From factory, one continuous sheet. Attached as said with self drilling screws. Use large washers. The water tank end rests on my frame rail (I-beam) so be careful when attaching. I would screw on the outside part of the frame. It's also attached to the cross beams for support in the middle.

Thanks Marsland. I will be careful as my black tank is on the rear support...