[Antennas] Water Tight Box

[Dennis Ashworth]

I need a source for a non-conductive watertight box for an antenna project. 
What I envision is a molded box (perhaps fiberglass) with a lid, made water 
tight by a rubber gasket.  By necessity, the access panel will be facing up 
(towards the rain). The lid may be conductive or non-conductive.

Minimum dimensions are 5" long, 2" wide and 2" deep.

Any sources come to mind?

Thanks
Dennis, K7FL
Battle Ground, WA