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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  

Available for Yard Pickup or Flatbed Delivery

  • Delivery Minimum: $2,500 material order required for flatbed dispatch.
  • Friday-Only Routing: We deliver strictly on Fridays—no weekday exceptions. Orders must be locked in by Wednesday night to make the weekly run.
  • $195 Local Flat-Rate: Applies to deliveries within 35 driving miles of the yard within the Treasure Valley.
  • Next-Day Yard Pickup: Standard Will-Call orders are always 100% free and staged next business day at Lake Hazel Ln.

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.

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.

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

Sales & Return Policy

All Sales Final: Material processing and custom cutting begin immediately upon order submission. No cancellations, returns, or exchanges are accepted under any circumstances. Buyers are solely responsible for verifying all structural dimensions, series, and specifications prior to ordering.

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.