Battery box

I'm looking for a water resistant floor mountable battery box / cabinet for outdoor use preferably made of UV stabilized plastic or aluminum for 1-2 group 27 batteries but perhaps 4 at most. Plans / parts that are generally available DIY in the U.S would be excellent also.
I found the Ameresco BBA-2 but it's wall mounted and too pricey.
I found the Ameresco BBA-2 but it's wall mounted and too pricey.
Comments
Personally, I'd stay away from metal, mainly because I'm a klutz.
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister ,
I'm leaning toward some sort of dock box now.
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister ,