3 sides trivision advertising 1.Full set digital control equipment 2. ... digital control equipment2.Maintenance free3.CE,ISO9000,National Invention Patent 3 sides trivision advertising, tri-vision display,outdoor trivision display The ... -145mm,thickness:1.8-2.0mmWidth of triangle prism: 126mm×3 sides Image flipping time : each face 6-12 seconds / customized ...