Posts & Timbers

6x8 - Pressure-Treated Douglas Fir

6x8 - Pressure-Treated Douglas Fir

6x8 - Pressure-Treated Douglas Fir — Standard & Better Pressure-Treated Douglas Fir available from Capital Lumber in Boise, Idaho
6x8 - Pressure-Treated Douglas Fir — Standard & Better Pressure-Treated Douglas Fir available from Capital Lumber in Boise, Idaho

Large pressure-treated Douglas Fir timber for heavy structural, outdoor, and ground-contact construction.

Large pressure-treated Douglas Fir timber for heavy structural, outdoor, and ground-contact construction.

LOCAL PICKUP + JOBSITE DELIVERY

In Stock

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

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

CALL TO CONFIRM

CALL TO CONFIRM

6x8 - Pressure-Treated Douglas Fir — Standard & Better Pressure-Treated Douglas Fir available from Capital Lumber in Boise, Idaho

ORDERING INFORMATION

ORDERING INFORMATION

Choose the verified size or option. Use the SKU at the counter.

Choose the verified size or option. Use the SKU at the counter.

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

IN STOCK = ON HAND

QUICK ORDER = USUALLY 1–5 DAYS

CUSTOM ORDER = CONFIRM LEAD TIME

SIZE / OPTION

SKU

INVENTORY DESCRIPTION

STATUS

6 × 8 · 16′

6 × 8 · 16′

235

235

6 x 8 - 16 PRESSURE TREATED

6 x 8 - 16 PRESSURE TREATED

In Stock

In Stock

6 × 8 · 20′

6 × 8 · 20′

166

166

6 X 8 - 20 PRESSURE TREATED

6 X 8 - 20 PRESSURE TREATED

In Stock

In Stock

PRODUCT SPECIFICATIONS

PRODUCT SPECIFICATIONS

COMMON SIZE

10' | 16' typical

10' | 16' typical

Additional sizes or options may be available.

Additional sizes or options may be available.

MATERIAL

Pressure-Treated Douglas Fir · Standard & Better · Allweather Wood

Pressure-Treated Douglas Fir · Standard & Better · Allweather Wood

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

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

SURFACE OPTIONS

Resawn | Rough Sawn

Resawn | Rough Sawn

Confirm the surface, quantity, and lead time with the yard.

Confirm the surface, quantity, and lead time with the yard.

APPLICATION

Heavy framing, structural supports, beams, outdoor construction

Heavy framing, structural supports, beams, outdoor construction

Suitable detailing and local code still apply.

Suitable detailing and local code still apply.

AVAILABILITY

In Stock

In Stock

Stock and lengths change throughout the week.

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.

Capital Lumber red tree mark and white wordmark.

© 2026 CAPITAL LUMBER CO., INC.

© 2026 CAPITAL LUMBER CO., INC.

>