This month, we’re proud to feature Marvin Fiberglass Windows — built to perform in the toughest conditions while delivering exceptional style and efficiency.
Built to Withstand the Elements
Fiberglass stands up to harsh weather and requires almost zero maintenance. Unlike other materials, it won’t expand or contract with temperature changes — helping resist leaks, seal failures, and long-term wear. That means reliable performance for years to come.
For March, we are specifically featuring fiberglass windows from the:
Marvin Elevate Collection
Marvin Essential Collection
Both collections showcase the strength and durability of high-density fiberglass, including Marvin’s proprietary Ultrex® material.
Why Choose Marvin Fiberglass Windows & Doors?
Not all composites are created equal. Marvin fiberglass is manufactured using lineal fiberglass and thermoset plastics — a combination that sets it apart from composites made with sawdust, vinyl, and other low-cost alternatives.
The Facts About Fiberglass:
Exceptional energy efficiency
Superior strength and durability
Resists expansion and contraction
Low maintenance performance
Stronger and more stable than vinyl
More resilient than rolled aluminum
When comparing materials, fiberglass consistently rises to the top for performance, longevity, and long-term value.
Endures harsh weather conditions and climates with minimal wear and tear over time
Virtually maintenance free
Provides exceptional structural strength, ensuring windows and doors open and close easily for years to come
Does not expand and contract with dramatic changes in temperature, making the product resistant to leaks, seal failures, and stress cracks
When combines with energy-efficient glass options, fiberglass keeps the indoors comfortable regardless of what's happening outdoors
Elevate -
Beauty Meets Durability
Long-Lasting Strength + Beauty
Designed with durable Ultrex® fiberglass exteriors to withstand the elements, Elevate® products deliver a perfect combination of exterior protection and the beauty of natural wood interiors.
Durable Finishes
Features a low maintenance, long-lasting appearance, even when subjected to temperature fluctuations. A proprietary AAMA-verified acrylic finish resists fading and scratches, even in darker colors.
Curated Choices
Warm wood interiors, popular styles, a variety of sizes, and considered details provide a classically rich aesthetic.
Essential
Clean Design. Powerful Performance.
Pure Reliability
Designed with strong, durable Ultrex® fiberglass exteriors and interiors to meet required performance ratings and remain virtually maintenance free for years, both inside and out.
Durable Finishes
Features a low maintenance, long-lasting appearance, even when subjected to temperature fluctuations. A proprietary AAMA-verified acrylic finish resists fading and scratches, even in darker colors.
Streamlined Selection
Narrow profiles, clean lines, straightforward features, sizes, and options satisfy industry design preferences and make it easy to choose and order.
📞 Ready to learn more? Ask your Allegheny Millwork & Lumber Window & Door Specialist how Marvin Fiberglass Windows from the Elevate and Essential Collections can elevate your next project.
Please join us for an upcoming AIA CEU Lunch & Learn program presented by Dave Aquadro, Marvin Architectural Project Manager.
Program Title: The Mill at Prattville: A Case Study in Adaptive Re-Use Credit: 1 LU/HSW
AIA Course #: THEMILLCS25
Course Description: This case study explores the restoration and repurposing of an 1850s mill into a modern apartment complex, sparking economic growth and revitalization within the greater Prattville community.
With seven historic brick structures on site, the design team navigated multiple layers of requirements—from design and financing to floodplain mitigation and National Park Service approvals. The project thoughtfully balances old, new, refurbished, and original elements, carefully revealing the historic character of the buildings while illustrating their evolution.
Special focus will be given to the fenestration solutions, highlighting the planning, research, design, execution, and key decision-making factors involved in repairing versus replacing windows.
We are excited to announce that Black Walnut S4S boards are now in stock at AM&L.
This premium hardwood is widely recognized for its beauty, workability, and long-term durability, making it a valuable addition to our hardwood offering.
Available Sizes:
0200400 – 1 X 2 Black Walnut
0200402 – 1 X 4 Black Walnut
0200404 – 1 X 6 Black Walnut
0200406 – 1 X 8 Black Walnut
0200408 – 1 X 12 Black Walnut
0200410 – 5/4 X 4 Black Walnut
0200412 – 5/4 X 6 Black Walnut
0200414 – 5/4 X 8 Black Walnut
0200416 – 5/4 X 10 Black Walnut
All boards are surfaced four sides S4S for consistent thickness, clean edges, and ease of use in finish applications.
Why Black Walnut:
Black Walnut is a premium North American hardwood known for its deep chocolate brown heartwood and natural elegance. Its rich color and distinctive grain pattern make it a standout choice for high end projects where appearance matters. Beyond its visual appeal, Black Walnut offers excellent strength, dimensional stability, and good natural resistance to decay. It machines and carves smoothly, sands easily, and finishes beautifully, often requiring little to no stain to achieve a refined look. Clear coats, oils, and natural finishes enhance its depth and warmth while allowing the character of the wood to shine through.
Black Walnut is commonly used in cabinetry, built ins, interior millwork, and trim accents, as well as custom furniture and floating shelves. It also performs well in decorative applications such as accent walls, bar tops, countertops, and specialty components. Because of its premium appearance and reliable workability, it remains a favorite material in residential remodeling, custom woodwork, and higher end interior design projects where both durability and aesthetics are important.
It’s time for the Best of the Burgh 2026 nominations, and we would truly appreciate your support!
Please consider nominating us in the Home & Design category for: • Building Products • Hardware Store • Kitchen & Bath Supplier • Window Company
You can submit your nomination using the button on the left.⇐
Your nomination helps us continue to grow and serve you better. You can nominate once per day through March 22, so feel free to show your support each day!
Voting officially begins April 1.
Thank you for choosing us as your trusted supplier. We truly appreciate your continued support!
From wood and MDF to WindsorONE and Royal & Duration, our wide selection fits every style and project. With over 350 profiles in stock, your perfect look is just a visit away. Let’s bring your vision to life!
Call Allegheny Millwork & Lumber
412-431-4224
✨ Save the Date! ✨ The 2026 Annual Product Showcase
is set for June 3! Innovation, products, and inspiration—all in one place.
DATE: Wednesday - June 3, 2026
TIME: 10 AM - 2 PM
LOCATION: Allegheny Millwork & Lumber Yard and Showroom
Watch for more information to come!
Allegheny Millwork & Lumber, 1001 Muriel Street, Pittsburgh, PA 15203, USA, 412-431-4224
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