Big Kahuna 18×20 Pergola Kit Features

The Big Kahuna 18×20 pergola kit comes standard with:

  • Double 2×8 Beams
  • 2×8 Mortised (Notched) Rafters
  • 6×6 Mortised Posts
  • 2×6 Decorative Angle Braces
  • 2×2 Top Slats
  • Stainless Steel Hardware
  • Optional Galvanized Post Mounting Hardware

Select your options below to customize your pergola kit: Wood Type, Freestanding or Attached, Post Length and Post Mounting Method, End Shape, and Post Base Trim.

Big Kahuna 18×20 Pergola Kit

$10,220.00 Free Shipping

★★★★★ Pergola Depot is rated 4.9 out of 5.0 based on 123 reviews

Wood Type * 

Freestanding or Attached * 

Will your new pergola be freestanding or attached to a wall?

Posts * 

Choose post length and mounting method that matches your choice of freestanding or attached. More Info

End Shape * 

Select your end shape:
Pergola End Shapes

Add Post Base Trim * 

Decorative trim 1” thick by 8” high to cover up the post mounting hardware. More info



18×20 Pergola Kits

The Big Kahuna 18×20 pergola kit is a classic design pergola that provides maximum patio coverage. Instantly add the perfect spot to gather with family and friends with a pergola. Each of our pergola kits is handcrafted and customized to fit your landscape. Finished to create the perfect spot for your outdoor BBQ or retreat. Call 877-563-0002 for help with any questions about measurements or customizations.