slightly OT: wall mount UPS for demarc

I'm looking to buy several small wall mounted UPS's to power a telco's metro ethernet switches. (Yes, they should have provided some kind of protection, but won't). The closest suitable UPS I've found is this: http://www.tripplite.com/EN/products/model.cfm?txtSeriesID=419&EID=361&txtModelID=3640 Can anyone suggest a better alternative? I want something sturdy, preferably metal, that can screw to a wall and be worry free for years at a time.