Dimensional lumber in pine, cedar, redwood, and Douglas fir arranged in a studio material display

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Dimensional Lumber

Dimensional Lumber

Dimensional Lumber

Studs, joists, rafters, and general framing stock.

Studs, joists, rafters, and general framing stock.

Studs, joists, rafters, and general framing stock.

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Capital Lumber Boise Dimensional Lumber building-material category icon

Dimensional Lumber

Dimensional Lumber

View Products Below

View Products Below

2x4 - Douglas Fir-Larch Framing Lumber — No. 1 Douglas Fir-Larch available from Capital Lumber in Boise, Idaho

2x4 - Douglas Fir-Larch

2x4 - Douglas Fir-Larch

#1 · KD · S4S

#1 · KD · S4S

The 2×4 is the everyday workhorse of light-frame construction: wall framing, plates, blocking, repairs, and small structural assemblies. This #1 Douglas Fir-Larch stock combines useful strength with kiln-dried, surfaced-four-sides consistency. Stocked for in-store pickup; verify grade, spacing, and code requirements before building.

The 2×4 is the everyday workhorse of light-frame construction: wall framing, plates, blocking, repairs, and small structural assemblies. This #1 Douglas Fir-Larch stock combines useful strength with kiln-dried, surfaced-four-sides consistency. Stocked for in-store pickup; verify grade, spacing, and code requirements before building.

8′ | 10′ | 12′ | 14′ | 16′

8′ | 10′ | 12′ | 14′ | 16′

2x6 - Douglas Fir-Larch Framing Lumber — No. 2 & Better Douglas Fir-Larch available from Capital Lumber in Boise, Idaho

2x6 - Douglas Fir-Larch

2x6 - Douglas Fir-Larch

2&Btr

2&Btr

The deeper 2×6 profile is commonly used for exterior walls, floor or ceiling joists, rafters, headers, and general framing when the plans call for it. Douglas Fir-Larch offers the stiffness and fastener-holding performance valued in structural work. Stocked for in-store pickup; final spans and loads must follow the plans and local code.

The deeper 2×6 profile is commonly used for exterior walls, floor or ceiling joists, rafters, headers, and general framing when the plans call for it. Douglas Fir-Larch offers the stiffness and fastener-holding performance valued in structural work. Stocked for in-store pickup; final spans and loads must follow the plans and local code.

8′ | 10′ | 12′ | 14′ | 16′ | 20′

8′ | 10′ | 12′ | 14′ | 16′ | 20′

2x8 - Douglas Fir-Larch Framing Lumber — No. 2 & Better Douglas Fir-Larch available from Capital Lumber in Boise, Idaho

2x8 - Douglas Fir-Larch

2x8 - Douglas Fir-Larch

2&Btr

2&Btr

The 2×8 profile provides added depth for joists, rafters, headers, deck framing, and other structural members where design loads exceed lighter framing. Douglas Fir-Larch is valued for stiffness and strength-to-weight performance. Stocked for in-store pickup; verify spans, loads, grade, and code before building.

The 2×8 profile provides added depth for joists, rafters, headers, deck framing, and other structural members where design loads exceed lighter framing. Douglas Fir-Larch is valued for stiffness and strength-to-weight performance. Stocked for in-store pickup; verify spans, loads, grade, and code before building.

8′ | 10′ | 12′ | 14′ | 16′ · 20′ occasionally

8′ | 10′ | 12′ | 14′ | 16′ · 20′ occasionally

2x10 - Douglas Fir-Larch Framing Lumber — Select Structural Douglas Fir-Larch available from Capital Lumber in Boise, Idaho

2x10 - Douglas Fir-Larch

2x10 - Douglas Fir-Larch

Select Structural · KD · S4S

Select Structural · KD · S4S

Select Structural Douglas Fir-Larch framing lumber for joists, rafters, beams, and other structural work. Stocked in 16′ and 20′ lengths, with 8′, 10′, and 12′ cut pieces; 14′ is not part of the stock program.

Select Structural Douglas Fir-Larch framing lumber for joists, rafters, beams, and other structural work. Stocked in 16′ and 20′ lengths, with 8′, 10′, and 12′ cut pieces; 14′ is not part of the stock program.

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

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

2x12 - Douglas Fir-Larch Framing Lumber — No. 2 & Better No-Prior Select Douglas Fir-Larch available from Capital Lumber in Boise, Idaho

2x12 - Douglas Fir-Larch

2x12 - Douglas Fir-Larch

#2&Btr No-Prior Select · KD · S4S

#2&Btr No-Prior Select · KD · S4S

The deep 2×12 Douglas Fir-Larch profile is commonly specified for joists, rafters, headers, and other long-span framing where the plans call for it. Its #2 & Better No-Prior Select grade is kiln-dried and surfaced four sides. Usually available within 1–2 days; confirm timing, spans, loads, and quantity with the yard.

The deep 2×12 Douglas Fir-Larch profile is commonly specified for joists, rafters, headers, and other long-span framing where the plans call for it. Its #2 & Better No-Prior Select grade is kiln-dried and surfaced four sides. Usually available within 1–2 days; confirm timing, spans, loads, and quantity with the yard.

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

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

Clean pale-golden Douglas Fir-Larch Select Structural 2x6 board shown front-facing

2x6 - Douglas Fir-Larch - Select Structural

2x6 - Douglas Fir-Larch - Select Structural

Select Structural / KD / S4S

Select Structural / KD / S4S

Select Structural Douglas Fir-Larch lumber for framing where plans or engineering call for a higher grade. Kiln-dried and surfaced four sides (S4S). Current inventory verifies 8′, 12′, 14′, and 16′ lengths; confirm design values and quantity before ordering.

Select Structural Douglas Fir-Larch lumber for framing where plans or engineering call for a higher grade. Kiln-dried and surfaced four sides (S4S). Current inventory verifies 8′, 12′, 14′, and 16′ lengths; confirm design values and quantity before ordering.

8′ | 12′ | 14′ | 16′

8′ | 12′ | 14′ | 16′

Clean pale-golden Douglas Fir-Larch Select Structural 2x8 board shown front-facing

2x8 - Douglas Fir-Larch Select Structural

2x8 - Douglas Fir-Larch Select Structural

Select Structural / KD / S4S

Select Structural / KD / S4S

Select Structural Douglas Fir-Larch lumber for framing where plans or engineering call for a higher grade. Kiln-dried and surfaced four sides (S4S). Yard-system item numbers verify 8′, 12′, and 16′ lengths; confirm design values and quantity before ordering.

Select Structural Douglas Fir-Larch lumber for framing where plans or engineering call for a higher grade. Kiln-dried and surfaced four sides (S4S). Yard-system item numbers verify 8′, 12′, and 16′ lengths; confirm design values and quantity before ordering.

8′ | 12′ | 16′

8′ | 12′ | 16′

Douglas Fir-Larch 2x4 stud framing board shown front-facing with small sound knots

2x4 - Douglas Fir-Larch Stud Framing

2x4 - Douglas Fir-Larch Stud Framing

Stud&Btr / 2&Btr / N.P.S. (No-Prior) / Prime / 1&Btr

Stud&Btr / 2&Btr / N.P.S. (No-Prior) / Prime / 1&Btr

Precut 2×4 Douglas Fir-Larch studs make standard wall layouts faster for load-bearing and non-load-bearing walls. The listed lengths correspond to common wall heights. Stocked for in-store pickup; verify the required grade, spacing, and local code before framing.

Precut 2×4 Douglas Fir-Larch studs make standard wall layouts faster for load-bearing and non-load-bearing walls. The listed lengths correspond to common wall heights. Stocked for in-store pickup; verify the required grade, spacing, and local code before framing.

92-5/8" / 104-5/8" / 116-5/8"

92-5/8" / 104-5/8" / 116-5/8"

SPECIFICATION HELP

Not sure what

to specify?

Not sure what

to specify?

Not sure what

to specify?

Start with the conditions, not the brand. The yard can narrow the products from there.

Start with the conditions, not the brand. The yard can narrow the products from there.

Start with the conditions, not the brand. The yard can narrow the products from there.

01 / APPLICATION

01 / APPLICATION

Where it will be installed, what it supports, and how it will be exposed narrow the right product.

Where it will be installed, what it supports, and how it will be exposed narrow the right product.

02 / SPECIFICATION

02 / SPECIFICATION

Nominal size, actual dimensions, grade, treatment, span, and code requirements should match the plan.

Nominal size, actual dimensions, grade, treatment, span, and code requirements should match the plan.

03 / LOGISTICS

03 / LOGISTICS

Quantity, lead time, pickup, delivery access, and job sequence determine how the order should be staged.

Quantity, lead time, pickup, delivery access, and job sequence determine how the order should be staged.

Capital Lumber red tree mark and white wordmark.

© 2026 CAPITAL LUMBER CO., INC.

© 2026 CAPITAL LUMBER CO., INC.

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