... .0mmSurface Treatment: Powder-coated/Anodized/Electrophoresis/PVDF, etc.Aluminium skylightAluminum awing window with no less than 28dB Sound ... Insulation Aluminium skylight Features good water, air tightness, energy saving, ... easy to install Profile: aluminum-alloy, Alu6063, normal or thermal break Profile thickness: 2.0mm and or more Surface treatment: ...