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EXPRESS ORDERS SHIP IN 3 DAYS!

Including modifications such as glass kits, louvers, hardware prep, etc.

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TRANSOMS & SIDELITES

In Stock and Ready to Ship in

Steel-frame sidelites and transoms are integrated sections of a commercial door frame that enhance light, visibility, and design flexibility—without sacrificing strength or code compliance.

  • Sidelites are vertical panels beside a door, often glazed to bring in natural light or improve sightlines. They’re used in offices, lobbies, and hallways, and can also be solid for privacy or rated for fire protection.

  • Transoms are horizontal panels above the door, typically filled with glass or louvers. They provide daylight, balanced sightlines, or ventilation, and can be fixed or operable.

  • Combined units frame the door on top and sides—ideal for entrances where openness, light transfer, and fire/life safety standards must all be met.

These assemblies are made from 12–16 gauge hollow metal and support glazing, louvers, or solid infills, with optional fire ratings up to 90 minutes.

Steel Frame Transoms

Steel-frame transoms are horizontal panels installed above a commercial door, integrated into the door frame. They serve both functional and aesthetic purposes—providing overhead daylight, ventilation (if louvered), visual balance, or alignment with adjacent openings—while maintaining fire ratings and structural performance.

  • Glass Transoms: Allow light transfer in corridors, entryways, and shared spaces

  • Louvered Transoms: Used for passive ventilation in utility or mechanical rooms

  • Solid Panel Transoms: Ideal for visual continuity, fire separation, or security requirements

  • Combined Units: Often used in conjunction with sidelites for full-elevation assemblies

Transoms are fabricated from 12–16 gauge steel, and many are fire-rated up to 90 minutes depending on the glazing or panel used.

To receive a quote on your project, please email [email protected], call 888-508-9875, or build an instant quote on our door builder!

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Steel Frame Sidelites

Steel-frame sidelites are vertical panels integrated into the door frame, positioned on one or both sides of a commercial door. They’re used to increase visibility, bring in natural light, and enhance architectural aesthetics—all while maintaining code compliance and structural integrity.

  • Glazing Options: Clear, frosted, Low-E, laminated, insulated, or fire-rated glass

  • Solid Panels: Used where privacy, security, or fire barriers are needed

  • Common Use Cases: Office entrances, school corridors, hospital suites, and retail storefronts

  • Combined Assemblies: Often paired with transoms to create full-height light-transferring frames around the door

These assemblies are fabricated from heavy-duty 12–16 gauge steel and may be fire-rated up to 90 minutes when properly specified.

To receive a quote on your project, please email [email protected], call 888-508-9875, or build an instant quote on our door builder!

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Transoms and Sidelites In Stock – Add Light, Style & Code Compliance

Transoms and sidelites are key architectural features that expand a commercial door opening with natural light, increased visibility, and enhanced design. Whether you’re building out an office lobby, school entryway, or healthcare corridor, transom and sidelite frames allow you to meet building codes while improving the overall appearance of your commercial space.

At Door Depot, we offer in-stock steel transom frames and sidelite frames, available in standard and custom configurations—ready to ship fast nationwide.

Commercial Transom Frames – Prepped & Fire-Rated Options

Our transom frames are built from durable 16- or 14-gauge galvannealed steel and are available in:

  • Welded or knock-down (KD) frame assemblies

  • Fixed panels for glass, louvers, or solid infills

  • Compatible with fire-rated steel doors and fire-rated wood doors

  • UL- and Intertek-labeled fire ratings up to 90 minutes

  • Custom heights and mullion configurations available

Need storm or security compliance? Check out our tornado-rated doors and bullet-resistant doors that can be integrated with transoms and sidelites.

Commercial Sidelite Frames – Full Height & Glass-Ready

Sidelite frames allow light to pass beside your door opening and can be configured with:

  • ¼″ clear tempered, frosted, laminated, or fire-rated glazing

  • Narrow or full-height glass sections

  • Compatible steel doors with glass or wood doors with glass

  • Solid panel or fire-rated sidelite inserts

  • Factory prepped for custom vision panels or borrowed light windows

Transom and Sidelite Assemblies – Complete Door Systems

We offer full transom and sidelite frame assemblies designed to pair with:

All assemblies are fire-rated when required and ship prepped for commercial hardware, vision kits, and glazing.

Applications for Transoms and Sidelites

  • 🏫 School entrances, vestibules, and classroom corridors

  • 🏥 Hospital rooms, nurse stations, and exam suites

  • 🏢 Office lobbies and reception areas

  • 🛒 Retail storefronts and security vestibules

  • 🧯 Egress corridors requiring visibility and fire rating

Why Choose Door Depot for Transoms and Sidelites?

  • ✅ In-stock steel transom and sidelite frames

  • 🔥 Fire-rated and non-rated configurations available

  • 🚚 Fast shipping within 48 hours on standard sizes

  • 🛠️ Factory prepped for glazing, lites, and commercial hardware

  • 🛒 Easy online ordering with expert support and nationwide delivery

📦 Order transoms and sidelites online today at Door Depot and complete your commercial door openings with light, visibility, and code-compliant design—shipped fast and built to spec.

Why Commercial Door Transoms and Sidelites Add Value to Every Opening

Commercial door transoms and commercial door sidelites offer the ideal combination of daylight, design flexibility, and code-compliant performance. Whether you’re brightening a school corridor, adding visibility to an office lobby, or enhancing an entry vestibule, transoms and sidelites improve the overall functionality and appearance of your openings. Constructed from heavy-duty 12–16 gauge steel, our transom frames and sidelite frames integrate seamlessly with commercial steel doors—allowing natural light to enter without sacrificing strength, fire protection, or security. From modern architectural layouts to high-traffic institutional environments, these frame assemblies are a simple way to upgrade both aesthetics and performance.

Code-Compliant Transom Frames and Sidelite Frames for Any Project

At Door Depot, our transom frames and sidelite frames are engineered to meet the strictest industry standards, including ANSI A250.10, SDI 100, NFPA 80, and ADA accessibility guidelines. We offer UL- and Intertek-labeled commercial door transoms and sidelites with fire ratings from 20 to 90 minutes, with options for clear, frosted, louvered, or solid panel inserts. Whether you’re designing for egress corridors, rated partitions, or energy-efficient daylighting, our factory-fabricated frames deliver the required performance – without compromising design intent. Custom mullion reinforcements and glazing kits ensure your sidelite or transom frame meets the demands of any jobsite.

In-Stock Sidelite and Transom Frames, Ready to Ship

We maintain a large inventory of commercial door sidelites and transoms in popular sizes and configurations – including 3070, 6070, and double-door elevations—available for 48-hour shipping across all 50 states. Whether you need a single sidelite frame, a fully prepped transom frame, or a complete door and frame package with vision kits and hardware preps, Door Depot has you covered. Our fast shipping and pre-fabricated options help contractors avoid long lead times, reduce labor in the field, and keep projects on schedule without compromising quality.

Custom Commercial Door Transoms and Sidelites Built to Spec

Every project has unique conditions – and that’s why we offer custom fabrication for all commercial door transoms and sidelites. Our team can create tailor-fit solutions including oversized transoms, custom sidelite frames, fire-rated glass kits, louver inserts, and access-control hardware preps. Whether you need removable panels, electric strike support, or precise alignment with adjacent walls and ceilings, our in-house capabilities ensure your frame arrives jobsite-ready. With Door Depot, you get field-tested durability, factory precision, and code-ready assemblies delivered on your timeline.

Your Trusted Source for Transom Frames and Sidelite Frames – Door Depot

Door Depot is your reliable partner for commercial door sidelites and transoms – offering unmatched value, responsive support, and industry-leading turnaround times. From in-stock standard sizes to fully customized transom frames and sidelite frames, our team delivers everything you need to complete commercial door openings with confidence. Backed by years of expertise in commercial doors and frames, we help contractors, builders, and facility managers streamline installs, stay code-compliant, and deliver outstanding results on every project.

To receive a quote on your project, please email [email protected], call 888-508-9875, or build an instant quote on our door builder!

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