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Feature: 1:Voltage: 110V-220V 50/60Hz 2:Beam angle: 120 degree 3:Light Guide panel in good quality, bright and symmetrical 4:Quick and easy to change graphics, easy to install and carry 5:Material: good quality aluminum alloy with silver color or other colors 6:Packing: 1pcs/shrink film/bubble wrap/foam corner/carton 7:Welcome customer''''''''''''''''''''''''''''''''s size and requirements 8:All the accessories like AC/DC adapter, hanging/mounting fittings are using high quality materials Standard size: Model.No. Frame Size(mm) Poster Size(mm) Visible Size(mm) LZ-IDSA-AL2130-A3 317 x 440 A3 (297 x 420) 257 x 380 LZ-IDSA-AL2130-A2 436 x 610 A2 (420 x 594) 376 x 550 LZ-IDSA-AL2130-A1 610 x 857 A1 (594 x 841) 550 x 797 LZ-IDSA-AL2130-A0 857 x 1205 A0 (841 x 1189) 797 x 1145 Advantage: 1: Light source: LED, save energy over 60% compared to traditional one 2: Low consumption, low heat, mercury-free LED light source, maintenance free 3: Uniform illumination: High brightness, uniformity, soft, no flickering, comfortable for eyes 4: Professional---we focus on products with our own core technology only 5: Leading---with advanced facilities, our technology is always in the leading place 6: Fast---with high speed and profession equipments, we meet a very fast lead time Application: Showrooms, restaurants, Chain operation stores, company signboards, commercial centers, super markets, airports, subways, banks, bus stations indoor decorations. Exhibition projects etc.