Georgew48 wrote:
You will also need to make sure you are not blocking the radiator or transmission cooler. Both are very critical on heavy motorhomes. They need all the air they can get.
Also very good advice AND the beauty of our Pace Arrow is the grill is massive and the bumper is low so as long as we keep the toolbox to a medium size, we will be fine on airflow. As a consequence of your comment (THANK YOU) the man helping me design the frame for our box has said he will also add an "air scoop" to the top of the box to actually ADD air flow to the already amazing natural cooling system :)) winwin
Thanks for the imput. I love it when people make me think and create something even better than my original ideas.