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18x20 Pergola Kits

Maintenance-Free Vinyl and Aluminum 18' x 20' Pergolas Made to Last a Lifetime

Please note that these 18x20 pergolas are 18 feet wide and 20 feet deep. The width and depth are not interchangeable.

The attached pergolas are mounted to the house on the 18-foot width side and come 20 feet out from the house.

For the free-standing pergolas, the shade purlins run the 18-foot width of the pergola (as shown in this illustration) and provide the most shade when the evening sunlight comes from the 18-foot width side.

Click here to see our pergolas with the dimensions reversed.