No, Cliffman, they are just for ventilation. Even if they did open, I would need a step ladder to reach into the bed. The whole rear door section opens and swings up, giving a huge cavernous opening, or, you can just open the walk through door. It has been extremely convenient. I get a lot of compliments on its' looks also. The BEDRUG is the secret to having a topper of any brand on a truck. Since you loose standing room in your bed, you will be crawling around on your knees. The BEDRUG completely eliminates the feel of the ribs in the bed and is quite comfortable to kneel on and even to camp in. The other benefit, for those of us with 4" exhausts or other exhaust mods, is that it is a great sound damper from the noise that resonates in an enclosed bed area, because that will definately transfer into the cab. A topper seems to amplify the exhaust noise.