Shade louvers in anodized aluminum resist chalking, provide crisp lines
https://www.livebinders.com/b/3715629?tabid=9f717413-4728-25be-3b1a-e48d02378384
Shade louvers in anodized aluminum withstand chalking, supply crisp lines, and can be angled to obstruct high summer season sun while inviting lower winter season light.