[amsat-bb] Outdoor box for preamp?

[Michael Tondee]

Just got my new ARR SP432VDG preamp in the mail today. Since I'm on a 
budget, I opted to buy this unit rather than a mast mount outdoor amp. 
It is still my intention to mast mount this preamp though. Advanced 
Receiver Research themselves say that you can do this using a NEMA 
outdoor electrical enclosure. The problem is that I've been looking at  
outdoor electrical enclosures and have yet to find one that has 
dimensions that the preamp will fit in. I have really only been looking 
at outlet type boxes.
 Anyone have any suggestions as to what I can use? The unit is about 3 
inches tall including the N connectors and about 4 and 5/8
inches wide. I need something relatively cheap that will give reliable 
protection.
Thanks,
Michael, W4HIJ