!/2" from btm of rail to top of can, you can put the can sideways also the hold down device is ajustable on the framebetter question how much room between your molle panel's and the bed rail for your cover clamps? I like my cover but it has long handles to pull down and release.
I agree ! Would 2 fit without going past the wheel well.?2 Gal, I like it because it sets in between the wheel well and the tail gate frame flush