Dimensional Lumber

6x6 - Pressure-Treated Douglas Fir

The 6×6 treated Douglas Fir timber is built for heavier deck or pergola columns, structural posts, landscape walls, and demanding below-grade work. Its CA-C .31 treatment reflects the more severe exposure listed for this item. Stocked for in-store pickup; confirm engineering, fasteners, and use requirements with the yard.

The 6×6 treated Douglas Fir timber is built for heavier deck or pergola columns, structural posts, landscape walls, and demanding below-grade work. Its CA-C .31 treatment reflects the more severe exposure listed for this item. Stocked for in-store pickup; confirm engineering, fasteners, and use requirements with the yard.

The 6×6 treated Douglas Fir timber is built for heavier deck or pergola columns, structural posts, landscape walls, and demanding below-grade work. Its CA-C .31 treatment reflects the more severe exposure listed for this item. Stocked for in-store pickup; confirm engineering, fasteners, and use requirements with the yard.

STOCKING VARIANTS / ITEM NUMBERS

Choose a verified size or option below and use its item number when calling or ordering at the counter.

6x6 - Pressure-Treated Douglas Fir — No. 2 & Better / CA-C .31 Below Grade Pressure-Treated Douglas Fir available from Capital Lumber in Boise, Idaho

ORDERING INFORMATION

Choose the verified size or option. Use the item number at the counter.

IN STOCK = ON HAND · QUICK ORDER = USUALLY 1–5 DAYS · CUSTOM ORDER = CONFIRM LEAD TIME

SIZE / OPTION

ITEM NUMBER

INVENTORY DESCRIPTION

STATUS

8′

8′

157

6X6-8' D.F. TREATED CA-C .31

In Stock

In Stock

10′

10′

158

6X6-10' D.F. TREATED CA-C .31

In Stock

In Stock

12′

12′

159

6X6-12' D.F. TREATED CA-C .31

In Stock

In Stock

16′

16′

161

6X6-16' D.F. TREATED CA-C .31

In Stock

In Stock

20′

20′

163

6X6-20' D.F. TREATED CA-C .31

In Stock

In Stock

COMMON SIZE

12′ | 16′ | 20′ · cut pieces: 8′ | 10′ (no 14′)

Additional sizes or options may be available.

MATERIAL

Pressure-Treated Douglas Fir · 2&Btr; CA-C .31 Below Grade Use · Allweather Wood

Review the exact material, finish, grade, or treatment.

APPLICATION

General building use

Suitable detailing and local code still apply.

AVAILABILITY

In Stock

Stock and lengths change throughout the week.

BEFORE YOU BUILD

A few useful things to know

before this material leaves the yard.

A few useful things to know

before this material leaves the yard.

01 / CONFIRM THE SPEC

Match nominal size, actual dimensions, grade, treatment, exposure, and intended use to the plans.

02 / VERIFY COMPATIBILITY

Confirm fasteners, connectors, adhesives, coatings, and local code requirements for the exact product.

03 / PLAN THE ORDER

Bring dimensions, spans, and finish goals when you call.

NOT SURE WHAT FITS TOGETHER?

Call a material expert with the product reference in hand.

Call a material expert with the product reference in hand.

Tell us what you are building. We can confirm material, fasteners, tools, quantities, pickup, and delivery.

Tell us what you are building. We can confirm material, fasteners, tools, quantities, pickup, and delivery.

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