Solid Wood Components for Exterior Doors


Quanex Building Products provides premium astragals, frames, mullions, thresholds, stops and sawn veneers to the door industry.

To meet your unique needs, we offer more than 30 wood species. By aligning ourselves with well-established mills that must pass an ongoing evaluation based on yield, overall quality, and on-time delivery, we are constantly adding new, high-quality species in select and character grades.

Window & Patio Door Extension Jamb Kits

Customers can buy ready-to-install jambs in several species and substrates, including solid wood, medium-density fiberboard, veneer wrapped, primed or painted. Jambs are kitted by unit and labeled uniquely for each job - customers just open the kit and install the jambs in seconds with our patented pocket and screw system.

Contact us or visit our preassembled components and millwork capabilities pages to learn more.


African mahogany
American beech
American cherry
American walnut
Baltic birch
Black ash
Black locust
Brazilian cherry
Burmese teak
Douglas fir, vertical or mixed grain
European steamed beech
Hard Maple
Hemlock, vertical or mixed Grain
Honduran (genuine) mahogany
Lodgepole pine
Nootka cypress (Alaskan cedar)
Ponderosa pine
Red birch
Red oak, plain, quarter or rift sawn
Santos mahogany
Soft maple
Southern yellow pine
Western red cedar
White ash
White oak, plain, quarter or rift sawn
Yellow birch
Yellow poplar

  • SmoothWood Technology – produces high-quality, ready-to-finish surfaces that save our customers time and resources. SmoothWood technology also softens knife marks, reduces shine, opens the wood grain and provides a uniform surface for staining, clear coating or painting.
  • Priming & Painting – uses high-quality primer that hides and seals the substrate better than competitive products, helping customers complete the job with just one coat of paint.
  • Preservative Treating – water-based preservatives can be applied that exceed the WDMA, I.S.4 standard for Water-Repellant Preservative, Non-pressure Treatment for Millwork.

  • FSC® products are available, which provide internationally recognized standard setting, trademark assurance and accreditation services for companies, organizations and communities interested in responsible forestry.
  • All products are CARB Phase II certified to protect the air quality of homes 
  • All species are Lacy Act Compliant to help protect against deforestation and illegal logging practices
  • Flooring can contribute to Leadership in Energy and Environmental Design (LEED) certification points
    • MR 7: Certified Sustainability Harvested Wood
    • EQ  4.4: Low Emitting Materials