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11-7/8" RFPI-40 I-Joist

11-7/8" RFPI-40 I-Joist

11-7/8" RFPI-40 I-Joist
In Stock — Boise yard
$4.75 per linear foot
Bulk Pricing: As low as $3.99
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
$4.51 / lf
$5,000–$12,499
Tier 2 discount
$4.37 / lf
$12,500+
Best public pricing tier
$3.99 / lf

Full house packages may qualify for deeper price discounts.

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-40 I-Joists are supplied through our Boise, Idaho lumberyard for residential jobs throughout the Treasure Valley. Designed with 2-5/16" wide flanges, this 11-7/8" depth series offers increased lateral stability during framing and an expanded fastening area. Laminated composite layers bonded with exterior structural resins ensure every board stays flat, preventing subfloor squeaks. This series serves as a direct equivalent to Weyerhaeuser TJI-230 and Boise Cascade BCI-6500.

Specifications
  • Brand: Roseburg Forest Products
  • Depth: 11-7/8"
  • Flange Width: 2-5/16"
  • Series: RFPI-40
  • Material: Engineered wood with solid OSB web paths
Common Uses
  • High-stiffness residential floor platform joists for clear-span great rooms and high-load kitchen framing footprints.
  • Roof rafters and structural roof purlins carrying high dead loads or equipment weights.
  • Perimeter boundary enclosure lines matching common 11-7/8" deep floor systems.
Contractor & Builder Notes
  • Standard Hangers: Face mount IUS2.37/11.88 top flange ITS2.37/11.88.
  • Stable Target Target: The 2-5/16" wide flange speeds up panel layout tracking and stops edge fasteners from blowing through sheets.
  • Reduced Framing Twist: Wide flange layout improves lateral stability during floor layout staging before sheathing is attached.
  • Web Stiffeners: Check engineered plans for required wood web stiffener blocks at heavily loaded foundation walls.
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.