Porta Trace Gagne LPA4 8.5 x 11" Thin Panel Light Box Lightweight, low profile, easily fits into a briefcase, in portfolio for mobility or in a drawer for storage. Lamps provide color corrected and offer more than 20,000 hours of life; they are powered by a miniature A/C adapter (included). Plexiglas top is also removable for insertion of display media making this unusually versatile. Use as a lighted backlit picture frame; adding drama to your presentation. 5000K fluorescent - Lamp life is 20,000 hours (approx.) Viewing Area Size: 8" x 10" (20.3 x 25.4cm).