... : 880mmfeature ad advantages:1.high light transmittance2.limpid transparent3.high light penetrability,more brighter4.high quality competitive price. 5.caring ... . the range of application:It is suitable for PROJECTOR,PROJECTOR,EPIDIASCOPE and ,also suitable for Solar energy collector ... hot water heater, solar furnace, stage light,LCD projector,AV projector,HOME cinema magnifier and so on...over 10 ...