Engineered Beams

Overview

Capital Lumber supplies a full range of engineered wood products (EWP) designed for superior strength, consistency, and performance in structural framing applications. These beams are ideal for floor systems, headers, and long-span applications where dimensional stability and load-bearing capacity are critical.
Our selection includes Microllam® LVL, TimberStrand® LSL, and TJI® Joists, sourced from trusted manufacturers like Weyerhaeuser and Rosboro.

Product Summary

Product Type

Dimensions / Specs

Stocking Lengths

Notes

Microllam® LVL 2.0

1-¾” thick
Depths: 9-½”, 11-⅞”, sometimes 14” & 16”

Sold per LFT – Cut to size

Excellent for headers, beams, and rim boards

TJI® 110 Series

1-¾” flange thickness
Depths: 9-½”, 11-⅞”

Sold per LFT – Cut to size

Lightweight I-joists for long spans and quiet floors

TimberStrand® LSL Framing

Nominal: 2x4 & 2x6
Actual: 1-½” x 3-½”, 1-½” x 5-½”

16' only

Engineered for straightness and dimensional stability

Rosboro X-Beam® Glulam

Custom sizes available

Cut to order

Made in USA. High strength, uniform performance for load-bearing spans

Additional Info

  • Engineered beams are straighter, stronger, and more dimensionally stable than solid sawn lumber.

  • Custom cut lengths and job-specific sizing available on request.

  • All products are APA-certified and meet industry performance standards.

  • Delivery and jobsite drop-off available throughout the Treasure Valley.

Suppliers

Weyerhaeuser

Rosboro

Contact Us
Stacks of Weyerhaeuser TJI® engineered I-joists stored at Capital Lumber’s yard, used for long-span floor and roof framing.
Weyerhaeuser Microllam® LVL beams neatly stacked outdoors at Capital Lumber, ideal for headers, rim boards, and structural framing.
Mixed inventory of Weyerhaeuser TJI® I-joists and dimensional lumber staged at Capital Lumber’s Boise yard for contractor pickup.

Engineered Beams

Overview

Capital Lumber supplies a full range of engineered wood products (EWP) designed for superior strength, consistency, and performance in structural framing applications. These beams are ideal for floor systems, headers, and long-span applications where dimensional stability and load-bearing capacity are critical.
Our selection includes Microllam® LVL, TimberStrand® LSL, and TJI® Joists, sourced from trusted manufacturers like Weyerhaeuser and Rosboro.

Product Summary

Product Type

Dimensions / Specs

Stocking Lengths

Notes

Microllam® LVL 2.0

1-¾” thick
Depths: 9-½”, 11-⅞”, sometimes 14” & 16”

Sold per LFT – Cut to size

Excellent for headers, beams, and rim boards

TJI® 110 Series

1-¾” flange thickness
Depths: 9-½”, 11-⅞”

Sold per LFT – Cut to size

Lightweight I-joists for long spans and quiet floors

TimberStrand® LSL Framing

Nominal: 2x4 & 2x6
Actual: 1-½” x 3-½”, 1-½” x 5-½”

16' only

Engineered for straightness and dimensional stability

Rosboro X-Beam® Glulam

Custom sizes available

Cut to order

Made in USA. High strength, uniform performance for load-bearing spans

Additional Info

  • Engineered beams are straighter, stronger, and more dimensionally stable than solid sawn lumber.

  • Custom cut lengths and job-specific sizing available on request.

  • All products are APA-certified and meet industry performance standards.

  • Delivery and jobsite drop-off available throughout the Treasure Valley.

Suppliers

Weyerhaeuser

Rosboro

Contact Us
Stacks of Weyerhaeuser TJI® engineered I-joists stored at Capital Lumber’s yard, used for long-span floor and roof framing.
Weyerhaeuser Microllam® LVL beams neatly stacked outdoors at Capital Lumber, ideal for headers, rim boards, and structural framing.
Mixed inventory of Weyerhaeuser TJI® I-joists and dimensional lumber staged at Capital Lumber’s Boise yard for contractor pickup.

Engineered Beams

Overview

Capital Lumber supplies a full range of engineered wood products (EWP) designed for superior strength, consistency, and performance in structural framing applications. These beams are ideal for floor systems, headers, and long-span applications where dimensional stability and load-bearing capacity are critical.
Our selection includes Microllam® LVL, TimberStrand® LSL, and TJI® Joists, sourced from trusted manufacturers like Weyerhaeuser and Rosboro.

Product Summary

Product Type

Dimensions / Specs

Stocking Lengths

Notes

Microllam® LVL 2.0

1-¾” thick
Depths: 9-½”, 11-⅞”, sometimes 14” & 16”

Sold per LFT – Cut to size

Excellent for headers, beams, and rim boards

TJI® 110 Series

1-¾” flange thickness
Depths: 9-½”, 11-⅞”

Sold per LFT – Cut to size

Lightweight I-joists for long spans and quiet floors

TimberStrand® LSL Framing

Nominal: 2x4 & 2x6
Actual: 1-½” x 3-½”, 1-½” x 5-½”

16' only

Engineered for straightness and dimensional stability

Rosboro X-Beam® Glulam

Custom sizes available

Cut to order

Made in USA. High strength, uniform performance for load-bearing spans

Additional Info

  • Engineered beams are straighter, stronger, and more dimensionally stable than solid sawn lumber.

  • Custom cut lengths and job-specific sizing available on request.

  • All products are APA-certified and meet industry performance standards.

  • Delivery and jobsite drop-off available throughout the Treasure Valley.

Suppliers

Weyerhaeuser

Rosboro

Contact Us
Stacks of Weyerhaeuser TJI® engineered I-joists stored at Capital Lumber’s yard, used for long-span floor and roof framing.
Weyerhaeuser Microllam® LVL beams neatly stacked outdoors at Capital Lumber, ideal for headers, rim boards, and structural framing.
Mixed inventory of Weyerhaeuser TJI® I-joists and dimensional lumber staged at Capital Lumber’s Boise yard for contractor pickup.
A background image of pine wood.
  • Capital Lumber Co.

    ·

    Locally Owned

    ·

    Northend

    ·

    Capital Lumber Co.

    ·

    Locally Owned

    ·

    Northend

    ·

    Capital Lumber Co.

    ·

    Locally Owned

    ·

    Northend

    ·

A background image of pine wood.
  • Capital Lumber Co.

    ·

    Locally Owned

    ·

    Northend

    ·

    Capital Lumber Co.

    ·

    Locally Owned

    ·

    Northend

    ·

    Capital Lumber Co.

    ·

    Locally Owned

    ·

    Northend

    ·

A background image of pine wood.
  • Capital Lumber Co.

    ·

    Locally Owned

    ·

    Northend

    ·

    Capital Lumber Co.

    ·

    Locally Owned

    ·

    Northend

    ·

    Capital Lumber Co.

    ·

    Locally Owned

    ·

    Northend

    ·