NEMA 3R junction box with bracket for mounting?

Hi,
I install many arrays and we usually drill the junction box into the rail (creating a potential water leak).
Are there any weatherproof boxes with brackets for SnapNRack/Ironridge rails, etc?
Thanks.
I install many arrays and we usually drill the junction box into the rail (creating a potential water leak).
Are there any weatherproof boxes with brackets for SnapNRack/Ironridge rails, etc?
Thanks.