The Preston With Louvers

Rafter/ Beam Support (Required)
2x6x10 (5x15x305cm) Pressure-Treated Boards for Beams and Rafters (10) (purchase at local building center)

If Mounting Pergola on Concrete or Wood Deck
4x4x8 (10x10x250cm) Pressure-Treated Wood Posts, cut down to 94“ (239cm) (4) (purchase at local building center)

If Mounting Pergola in Ground
4x4x12 (10x10x365cm) Pressure-Treated Wood Posts (4) (purchase at local building center)
Concrete Ready Mix (4) (purchase at local building center)

*IMPORTANT NOTE*
Most commercially available pressure treated 4×4 posts are milled to 3 1/2” x 3 1/2“ (8.9×8.9cm).
The wood posts cannot exceed 3 5/8” x 3 5/8“ (9.2×9.2cm) square in order to fit inside the round post inner channels.

Round Post Bracket Kit (Included in the Round Post Bracket Kit)

• Galvanized Steel Brackets (4)
• #8 x 1 1/2” (4x38mm) Wood Screws (4)
• 5/16 x 3“ (8×76.2mm) Lag Screws (12)

Refer to the Bracket Kit instructions for hardware requirements, as they pertain to your application:

If mounting pergola onto an existing concrete surface:

• 3/8” x 3“ (6×76.2mm) Concrete Sleeve Anchors – (16)
• 5/16” (8mm) Concrete drill bit. Minimum 3“ (76mm) long (1)

If mounting pergola onto a wooden/composite deck:

• 5/16” x ?“ (8x?mm) Lag Bolts (16) (Bolt length depends on thickness of deck)
• 5/16” (8mm) Washers (32)
• 9/64” (3.5mm) Wood drill bit. Minimum 3“ (76mm) long (1)

If mounting pergola onto a wooden/composite deck with AN ACCESSIBLE UNDERSIDE:

• 5/16” x ?“ (8x?mm) Bolts and Nylon-Insert Lock Nuts (16) (Bolt length depends on blocking material)
• 5/16” (8mm) Washers (32)
• 5/16” (8mm) Wood drill bit. Minimum 3“ (76mm) long (1)
• 2×10” (5.1x25cm) Wood Blocks (4) to be secured between the deck joists, to provide adequate support for the pergola posts.