This is how it looked before.
One big honking slab of aluminum strips, most of them half-bent and caked with grime. The tilt wand broke off long ago, so I never rotated them open. Raising this unwieldy thing required armstrength and patience. I never could get them to go lower than this, leaving a perpetual gap at the bottom. Perfect for plants or sunbathing kitties, but not much for privacy.
This is how it looks now.