bryan excellent idea, that is what I did with my straight truck before I sold it, had a team-mate who smoked way too much, like 4 packs a day and even though I smoke one pak a day, I wouldn't get any sleep smelling the smoke. So...I took out the curtain, built a frame up against the cabinets with a swing in door and it worked out great for smoke, noise etc...also a much better sense of privacy. I used 1/2 inch plywood and even cut a porthole window and covered it with plexi glass. Used a piano hinge for the door and a screen door handle, it rattled a little but fixed that by using tape.....I even stained it to match my oak cabinets, and put molding around for a half-way professional job...Did it in an m2 freightliner.