... Zize&Color:As your requirment 3.Certification:ISO9001:2008 Exterior Aluminum BlindsSpecifications:1.Material: Galvanized steel or aluminum2. ... Size: H*W,Any length and width as designed.3.Blade: Single or double blades ... material, light but high rigidity and consistency,exterior protection structure, preferable ventilation performance, easy fix and install, etc. Advantages:1).Adjust ...