Actual Decking Product Sizes

The reason a 2 x 2 spindle is not 2 inches x 2 inches but instead 1-⅜ inches x 1-⅜ inches is because of the milling process. Standard (nominal) size for rough cut lumber is 2” x 2” and then it is run through a planer resulting in a smoother finish. At this point in the process, the actual dimensions are 1-⅜ inches x 1-⅜ inches. This, by the way, is an industry standard. If you go to your local Lowes or Home Depot, you will find the similar thing in lumber sizes.

Actual Size Chart

Product Size Exact Size Exact Length
Spindles
2 x 2 Spindles 2 x 2 1-3/8" x 1-3/8" 1/4" less than the listed length
2 x 3 Spindles 2 x 3 1-3/8" x 2-1/8" 1/4" less than the listed length
3 x 3 Spindles 3 x 3 2.1/4" x 2.1/4" 1/4" less than the listed length
4 x 4 Spindles 4 x 4 3-1/4" x 3-1/4" 1/4" less than the listed length
Spindle Tops
2 x 2 Spindle Tops 2 x 2 1-3/8" x 1-3/8" Exact to the listed length
2 x 3 Spindle Tops 2 x 2 1-3/8" x 2-1/8" Exact to the listed length
Lamp Posts
4 x 4 Lamp Posts 4 x 4 3-3/8" x 3-3/8" Exact to the listed length
6 x 6 Lamp Posts 6 x 6 5-1/4" x 5-1/4" Exact to the listed length
Deck Posts
4 x 4 Deck Posts 4 x 4 3-3/8" x 3-3/8" 1/4" less than the listed length
6 x 6 Deck Posts 6 x 6 5-1/4" x 5-1/4" 1/4" less than the listed length
Porch Posts
4 x 4 Porch posts 4 x 4 3-3/8" x 3-3/8" Exact to the listed length
6 x 6 Porch Posts 6 x 6 5-1/4" x 5-1/4" Exact to the listed length
Post Caps
4 x 4 Post Caps 4 x 4 3-5/8" x 3-5/8" N/A
6 x 6 Post caps 6 x 6 5-5/8" x 5-5/8" N/A
8 x 8 Post caps 8 x 8 7-5/8" x 7-5/8" N/A
Base Trim
4 x 4 Base Trim 4 x 4 3-5/8" x 3-5/8" N/A
6 x 6 Base Trim 6 x 6 5-5/8" x 5-5/8" N/A
8 x 8 Base Trim 8 x 8 7-5/8" x 7-5/8" N/A
Handrails
2 x 4 Deluxe Handrails 2 x 4 1-3/8" x 3-3/8" Exact to the listed length
2 x 4 Moulded Handrails 2 x 4 1-3/8" x 3-3/8" Exact to the listed length
2 x 4 New England Handrails 2 x 4 1-3/8" x 3-3/8" Exact to the listed length
2 x 6 Deluxe Handrails 2 x 6 1-3/8" x 5-1/4" Exact to the listed length
Lattice Strips for 2 x 4 3/8" x 1-3/8" Exact to the listed length
Lattice Strips for 2 x 6 3/8" x 2" Exact to the listed length
Fence Pickets
1 x 4 Pickets 1 x 4 3/4" x 3-1/2" 1/4" less than the listed length
4 x 4 Fence Post 4 x 4 3-3/8" x 3-3/8" 1/4" less than the listed length
Stair Treads
     
1 x 11 Stair Treads 1 x 11 1" x 11" Exact to the listed length