FeaturesClinically TestedPortableEfficientUV Filtered & SafeFlicker-freeGlare-free & Easy on the Eyes SpecificationsEnclosure Size: 24.6" x 13" x 3.6" (62.5cm x 33cm x 9.1cm)Stand Height: Min. 11.5" to Max. 24.6" (Min. 29.2cm to Max 44.6cm)Stand Base: 24" x 13.3" (61cm x 31.2cm)Weight: light box - 9.2 lb (4.2kg); stand 3.8 lb (1.7kg)Electronic Ballast: 20, 000 cycles per secondLens: acrylic OP-3, 99% UV filterDiffusing Filter: Frosted lens filters glare.Power: 10, 000 lux at 12-15"Light Tubes: 3x40 watt compact fluorescent, 3000 Kelvin color temperatureReplacement Tubes: Philips: PL-L 40W30RS