... 20mm Width:0.5-2.1m, high impact resistance Self-draining design,Durable hot sale high quality of noise barrierA noise barrier ( ... colorUV resistance:with our 50μm thickness UV layer ,the sheet can filter 99% ultraviolet radiation in sunlightSpecific gravity: 1. ... --29dB,8mm--31dB,10mm-32dB 12mm--34dBApplications: 1) Roofing light sheet and sunshade for office building, department store, hotel, stadium, ...