New York’s Finest Quality Handcrafted Custom Steel Doors & Windows

Beautiful, Proven, and Dependable

Welcome to Portella, a solution to your architectural steel window and door needs. Our portfolio contains a number of custom steel and design options to customize your upcoming project. Whether you’re building a high-end boutique in SoHo, or upgrading your beautiful brownstone to improve lighting, energy efficiency or safety, Portella will provide the best services that your neighbors, clients, employees or occupants will appreciate and ultimately love. Our team looks forward to using our architectural skills to allow you to achieve that second-to-none quality of your steel design windows and doors.


Custom Steel Doors

Custom Steel Windows

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Portella Product Lines

Portella products are the architectural steel window and door industry’s best, offering energy efficient components, such as steel front door units, windows, wall panels and more. If you’re looking to transition to a full steel building, or simply transform your aesthetic to incorporate steel design windows and doors, Portella is the right choice for you.

Portella Announces The Contemporary 3-D Metal Door

Portella Announces The Contemporary 3-D Metal Door

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Portella is committed to providing the best architectural steel windows and doors quality to New York City through product development, testing and certification compliance. Our steel design windows and doors are third-party tested, and have all of NYC’s necessary building code certifications. No matter what your needs are, Portella will ensure you have the best of the best.

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A Solution to Steel Window and Door Thermal Challenges

Portella’s Artisan Series is a solution for New York’s luxury residential, boutique commercial applications or historical projects. Our Artisan Series products have some of the industry’s best thermally broken profiles. Artisan utilizes a GRP (glass reinforced polyetherimide), a non-conducting material with steel, which combines strength and exceptional thermal performance.

Portella sets itself apart from other steel window and door manufacturers by offering only NFRC-rated, thermally broken, laser fusion-welded and cold-rolled option for your steel windows and doors. We invite you to navigate towards our Artisan product pages, where you may peruse through our design guide full of Artisan steel design window and door options.

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Portella Difference

As an exceptional manufacturer of steel doors and windows since 1999, Portella holds a thorough understanding of what architects are looking for within their projects. We set ourselves apart from the competition in various ways:

  • Trademark narrow-profile steel window and door sightlines
  • Factory-installed, decorative glass with Low-E options for ultimate energy efficiency
  • NRFC-rated, thermally broken, laser fusion-welded and cold-rolled steel options
  • Leading WET-glazed glass glazing system eliminates moisture penetration.
  • Effective and thorough client communication, from quotation to shop drawings
  • Adequately tested and engineered designs

Ready to take the next step? Contact us, and consult one of our Project Managers.

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Blog & News

How Can You Add Value To A Home?

Whether you’re planning to sell your home soon, or you just want to maximize its value for yourself, there are a lot of ways you can make changes to increase the market value. Whether you’re considering a simple paint job or a complete renovation, you can find ways to increase the value of your home […]

What is Architectural Style?

When you drive through different parts of town or travel to new places, you’ve probably noticed that there are a lot of different types of homes and buildings. One street may be filled with historic Victorian-style homes and the next block could be modern highrises.  As the times change, so do the elements that people […]