Timber
Popular
4x4 Lumber
Last updated May 2026 · Reviewed by Lumberama Editorial Team
Dimensions
Nominal Size:4" × 4"
Actual Size:3.5" × 3.5"
Specifications
Board Feet / Lin Ft:1.333
Weight / Lin Ft:2.07 lbs
Common Uses
Deck posts, fence posts, pergola posts, mailbox posts, raised beds, structural columns
Available Lengths
8 ft
10 ft
12 ft
16 ft
20 ft
About 4x4 Lumber
The 4x4 post is essential for deck construction, fence building, and outdoor structures. Available in pressure treated for ground contact, cedar for natural rot resistance, and Douglas fir for structural strength.