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Boise Lumberyard › Timbers & Posts

4x12 x 20' Douglas Fir #2 Lumber

Grade stamp on 4x #2 Douglas fir timber
Grade stamp on 4x #2 Douglas fir timber 4x and 6x Douglas fir timbers and posts stacked at Dynamic Lumber Solutions lumberyard in Boise, Idaho
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4x12 x 20' Douglas Fir #2 Lumber

4x12 x 20' Douglas Fir #2 Lumber
27 pieces in stock — Boise yard
$120.00 per piece
Bulk Pricing: As low as $100.80
✓
Boise Yard Pickup FREE
Pickup Timing: Calculating...
  • No order minimum for yard pickup.
  • Hours: Tue, Thu, Sat • 7:00 AM – 11:00 AM.
✓
Flatbed Site Delivery $175
Arrives as early as: Calculating...
  • $2,500 order minimum.
  • Delivered on Tue, Thu, Sat via Treasure Valley flatbed.

Boise Lumberyard

1200 Lake Hazel Ln
Boise, ID 83705

Phone Number:
208-283-6056

★★★★★ 5.0 · 17 Google reviews

View all Google reviews →

Bulk purchase pricing

Applies to the entire order (mix & match across all products).

Order total
Your price
$1,500–$4,999
Tier 1 discount
$114.00 / pc
$5,000–$12,499
Tier 2 discount
$110.40 / pc
$12,500+
Best public pricing tier
$100.80 / pc

Full house packages may qualify for deeper price discounts.

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Boise Yard

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Boise Lumberyard

1200 Lake Hazel Ln
Boise, ID 83705

Phone Number:
208-283-6056

★★★★★ 5.0 · 17 Google reviews

View all Google reviews →
Framing Lumber | Timbers & Posts | Pressure-Treated Lumber | OSB Sheathing | I-Joists | Rim Board | LVL Beams | Boards | House Packages

Product Description

4x12 x 20' Douglas Fir #2 Lumber is a solid structural timber commonly used for primary beams, long-span headers, and heavy load-bearing framing applications requiring substantial structural capacity.

Cut from Douglas Fir and graded #2, this timber provides strong bending strength and dependable performance under load. It is surfaced four sides (S4S) and supplied green (S-GRN), making it suitable for structural beam construction, major supports, and above-grade exterior framing.

Specifications
  • Nominal Size: 4x12
  • Length: 20'
  • Species: Douglas Fir
  • Grade: #2
  • Moisture Content: Green (S-GRN)
  • Surfacing: S4S
Common Uses
  • Primary structural beams
  • Long-span headers
  • Deck and patio main beam members
  • Heavy load-bearing framing components
  • Timber framing and structural support systems
Contractor & Builder Notes
  • Pre-drill for large-diameter bolts or structural fasteners to minimize end splitting
  • Confirm bearing length, connection hardware, and load requirements per engineered drawings
Sales & Return Policy

30-Day Boise Yard Return Policy

Stock items bought directly from our local yard can be brought back within 30 days for an exchange or store credit. Please keep the following in mind:

  • Condition: Materials must be clean, uncut, and in completely resalable like-new condition.
  • Fees: There is no restocking fee.
  • Hauling: Bringing the materials back to our yard is the responsibility of the buyer.

See our full Sales & Return Policy for details.

Delivery Options

  • Fast pickup at our Boise yard
  • Moffett job-site unload available
  • Combine with OSB, LVLs, I-joists, or additional framing lumber in one delivery

If you already have a material list

Email it to info@dynamiclumbersolutions.com for fast, accurate pricing.

Many customers save significantly when they price their full list with us.

No material list yet?

If your project is already moving forward and you need a material list, we can help with quantity takeoffs for active builds.

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