I use an APC (American Power Conversion)
Line-R Model 1250 power conditioner. Not a rack mounted unit. Not a UPS (no battery) but seems to maintain power through a split second power outage.

Go to www.apcc.com for specs. No, I don't really know what the specs mean but I figured if it were a power conditioner and not a UPS, that it would have better power conditioning specs. Cost about $130 if I remember correctly. It weighs about 20 pounds.

I do not rack mount my equipment.

RJM