? Parameters Size:1350*4000mm Adapt for :50-60inch LED screen,or 80inch interactive whiteboard. Central installation of LED Screen or interactive whiteboard,which can be completely blocked and protected by the sliding board.There should be a safety distance between sliding and electronic screen. ? ? Product application ? ? ? Product features 1.Double layer design,High quality galvanized board,?protecting from Impact,wear and scratches ,bright and clean in detail,easy for writing. 2.?ABS corners. 3.Sandwich materials:Adopt strong,silence board,Smooth, no crease, deformation.Absorption of sound intensity.Environmental protection 4.Backplane materials:0.27mm SGCC Galvanized steel with Solid coating. 5.Adhesive material:Professional board Adhesive,durable and anti-corrosion, moisture, rust.The indicators meet the requirements of environmental protection. 6.Frame materials:45*25mm Grind arenaceous aluminum,thickness of 1.2mm.Corrosion and abrasion?resistance. ? ? Installation Stealth installation,no pieces exposed,Using bolts or anchor bolt fixing,The level of height difference<3mm ? ?