By Heather Burlingame, Senior Production Editor | September 28, 2010

Allmand BrothersPort-A-Lite (PAL) towers get power from one 120-volt outlet. Parallel lamp fixtures provide optimal light output. Insulated lamp-tip supports isolate the lamp from vibration. Lamp life exceeds 12,000 hours of use, says the company. Maximum adjustment height ranges from 7 to 12 feet.