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Boise Lumberyard › Timbers & Posts

6x12 x 20' Douglas Fir #1 Lumber

6x #1 Douglas fir lumber face grain angled view showing clear wood structure
6x #1 Douglas fir lumber face grain angled view showing clear wood structure Grade stamp on 6x #1 Douglas fir structural timber 4x and 6x Douglas fir timbers and posts stacked at Dynamic Lumber Solutions lumberyard in Boise, Idaho
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6x12 x 20' Douglas Fir #1 Lumber

6x12 x 20' Douglas Fir #1 Lumber
16 pieces in stock — Boise yard
$270.71 per piece
Bulk Pricing: As low as $227.40
✓
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
$257.17 / pc
$5,000–$12,499
Tier 2 discount
$249.05 / pc
$12,500+
Best public pricing tier
$227.40 / pc

Full house packages may qualify for deeper price discounts.

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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

6x12x20' #1 Douglas Fir is a large structural timber commonly used for beams, girders, posts, and other high-load framing applications in residential and light commercial construction.

#1 grade Douglas Fir is chosen for its strength, straight grain, and structural reliability, making it well-suited for heavy framing members and exposed structural applications where both performance and appearance matter.

Specifications
  • Nominal Size: 6x12
  • Length: 20'
  • Species: Douglas Fir
  • Grade: #1
  • Moisture Condition: Green (S-GRN)
  • Surfacing: S4S
Common Uses
  • Heavy timber beams and joists
  • Long-span structural framing
  • Residential and light commercial construction requiring premium strength
Contractor & Builder Notes
  • #1 Grade Douglas Fir is selected for high structural performance and minimal defects
  • 20' length is ideal for long spans, reducing joints and splices in framing
  • Always verify structural loads, spans, and fastening per project specifications and applicable building codes
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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