What a Louvered Roof Actually Gives You
An adjustable louvered roof lets the slats tilt from fully closed to fully open (0° to 90°, per the manufacturer), trading sun for shade and airflow without a fixed hardtop or a fabric cover that has to be removed.
What "louvered" means here
Both pergolas in this range use metal slats that tilt together, rather than a single fixed panel. The manufacturer states an adjustment range of 0° to 90° on both - closed blocks the most sun, fully open lets the most light and air through. The 12' x 16' pergola specifically describes two independently adjustable roof sections rather than one, per its own feature text; the 10' x 12' pergola's own text describes one adjustable louvered section.
UV blocking, per the manufacturer
The 10' x 12' pergola states its louvers block up to 99% of UV rays when closed; the 12' x 16' pergola's own feature text doesn't repeat that specific percentage, though both describe the same closed-vs-open mechanism. Shown as published on each listing, not assumed to be identical.
What adjusting the roof doesn't do
Neither listing's own coverage figures include drainage as an adjustable feature - both describe fixed drainage systems (a concealed gutter on the 12' x 16', drainage channels built into the frame on the 10' x 12') that operate the same way regardless of louver angle. Adjusting the roof changes sun and airflow, not water handling.
Wind and snow, per the manufacturer
Both pergolas are rated by the manufacturer to 72 mph wind. Only the 10' x 12' pergola's own feature text states a snow figure - up to 6 in of accumulation, 55 lb per square meter load capacity; the 12' x 16' pergola's own listing does not repeat a snow rating. Shown as published, not assumed to be the same for both.
Questions
Do both pergolas adjust the same way?
Both describe a 0° to 90° louvered adjustment, per the manufacturer. The 12' x 16' pergola's own text specifically describes two independently adjustable roof sections; the 10' x 12' pergola's text describes one.
Does the louvered roof block rain as well as sun?
The manufacturer markets the adjustable roof around sun and airflow, and describes a separate built-in drainage system on both pergolas for handling rainwater - not something the louver angle itself changes.
Are both pergolas rated for the same wind and snow load?
Both are rated to 72 mph wind, per the manufacturer. Only the 10' x 12' pergola's own listing states a snow-load figure (6 in accumulation, 55 lb per square meter); the 12' x 16' pergola's listing does not repeat one.