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from Boise, ID
from Boise, ID
20x20 Pergolas
We offer a wide selection of 20x20 pergola kits, including both free-standing and house-attached kits, those with shade canopies and those made for a slatted wood roof, and some made for smaller 4x4 wood frames and others for larger 6x6s. Use the filtering options below to quickly find the perfect 4-block pergola kit for your outdoor space.
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Wall-Mounted 20' x 20' Pergola with Shade Covers - Kit for 4x4 Wood
20% OffOriginal price $1,749Original price Starting at $1,749Original price $1,749Current price $1,399Original price $1,749Starting at$1,749$1,399Current price $1,399Original price $1,749 -
Stand-Alone 20 x 20 Pergola with Canopies - Kit for 4x4 Wood
20% OffOriginal price $1,999Original price Starting at $1,999Original price $1,999Current price $1,599Original price $1,999Starting at$1,999$1,599Current price $1,599Original price $1,999 -
Attached 20 by 20 Pergola and Canopies - Kit for 6x6 Wood
20% OffOriginal price $2,629Original price Starting at $2,629Original price $2,629Current price $2,099Original price $2,629Starting at$2,629$2,099Current price $2,099Original price $2,629 -
20x20 Covered Pergola with Sun Shades - Kit for 6x6 Wood
20% OffOriginal price $3,349Original price Starting at $3,349Original price $3,349Current price $2,679Original price $3,349Starting at$3,349$2,679Current price $2,679Original price $3,349
20x20 Refers to the Combined Inner Dimensions of the 4 Roof Openings
When we say a pergola's dimensions are 20x20, we are referring to the combined inside dimensions of the 4 roof openings (from inside-edge to inside-edge). All of the kits featured on this page are meant to have 4 roof openings, arranged in a 2x2 grid, which combine to be a total of 20' wide and a total of 20' deep.
The overall outside-edge to outside-edge dimensions of the pergola will be:
- 21' 2.6" wide x 21' 2.6" deep (if you choose a kit for 4x4 posts) OR
- 21' 10.6" wide x 21' 10.6" deep (if you choose a kit for 6x6 posts)
With all of this being said, you can easily change the overall size of your pergola by trimming the wood posts that you plan to use for the roof beams. For example, if you wanted the true outside-edge to outside-edge dimensions of a free-standing pergola to be exactly 20' x 20', you would need to:
- Purchase three sets of two posts totaling 20 feet to be the beams running the 20-foot width, and then cut off a total of 14.6 inches (for 4x4 wood posts) or 22.6 inches (for 6x6 wood posts) per set of two posts; and
- Purchase three sets of two posts totaling 20 feet to be the beams running the 20-foot depth, and then cut off a total of 14.6 inches (for 4x4 wood posts) or 22.6 inches (for 6x6 wood posts) per set of two posts
Important Note: Our shade canopies are specifically designed to fit roof openings that are exactly 8x8, 8x10, 8x12, 10x10, 10x12 and 12x12. If you're purchasing a kit with shade canopies, you cannot trim down the roof beam posts. Furthermore, all roof posts must be 8-, 10- or 12-foot lengths.