Storage Bay Slide-Out Tray. Ever wish your storage bay had a slide out tray but didn't want to spend six hundred buck on a new one? Here's your chance for half the cost. I have a real nice Slide Out Tray that came out the forward storage bay in my 5th wheel. The dimensions are 32 x 54.5 x 7.75 It has a positive locking mechanism and a max Load rating is 400 pounds. Installs in minutes. Camping world sells these for over six hundred dollars! http