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Boise Lumberyard › I-Joists

11-7/8" RFPI-70 I-Joist

RFPI-70 11-7/8 mill stamp on flange front view
RFPI-70 11-7/8 mill stamp on flange front view Roseburg RFPI-70 11-7/8 inch engineered wood I-joist shown in full-length mill-wrapped unit at Boise lumberyard Three stacked units of RFPI-70 11-7/8 inch engineered wood I-joists stored at Boise lumberyard
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11-7/8" RFPI-70 I-Joist

11-7/8" RFPI-70 I-Joist
In Stock — Boise yard
$6.02 per linear foot
Bulk Pricing: As low as $5.06
Pieces  
Length  
✓
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
$5.72 / lf
$5,000–$12,499
Tier 2 discount
$5.54 / lf
$12,500+
Best public pricing tier
$5.06 / lf

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

11-7/8" RFPI-70 I-Joists are supplied through our Boise, Idaho lumberyard for construction framing throughout the Treasure Valley. Engineered with a common 11-7/8" floor system depth and stable 2-5/16" wide flanges, this series offers high span capability with excellent job-site handling. Built true and square, they resist checking and shrinking to keep your floor flat and quiet over time. This series serves as a direct equivalent to Weyerhaeuser TJI-360 and Boise Cascade BCI-60.

Specifications
  • Brand: Roseburg Forest Products
  • Depth: 11-7/8"
  • Flange Width: 2-5/16"
  • Series: RFPI-70
  • Certification: APA Rated Structural Component
Common Uses
  • Clear-span floor platforms for premium custom homes, additions, and multi-family floor networks.
  • Roof rafters and structural ceiling frames requiring standard 11-7/8" engineered joist depth lines.
  • Perimeter boundary tracking and floor framing closures matching engineered systems.
Contractor & Builder Notes
  • Standard Hangers: Face mount IUS2.37/11.88 top flange ITS2.37/11.88.
  • Secure Fastening Target: The 2-5/16" wide flange face permits fast panel layout and code-compliant staggered boundary nailing.
  • Zero-Warp Engineering: Arrives flat with zero crown issues, eliminating time spent culling through twisted dimensional framing lumber.
  • Hanger Integrity: Ensure all joist hangers are fully nailed with specified fasteners before stacking heavy floor bundles.
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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