Commercial Doors
Office spaces continue to evolve, and so do the materials used to build them. In 2026, businesses are placing more emphasis on flexibility, natural light, privacy, and long‑term durability—making commercial interior doors an important part of office design and performance.
The best interior office doors are no longer selected based on appearance alone. Today’s offices require doors that support how each space is used, meet commercial code requirements, and stand up to daily wear in high‑traffic environments.
Interior Commercial Glass Doors Remain a Top Choice
Interior commercial glass doors continue to grow in popularity across modern office environments. These doors are commonly used in conference rooms, private offices, and shared workspaces because they help create open, light‑filled interiors while still defining separate areas.
Many businesses choose commercial interior doors with glass to allow natural light to move throughout the building. This helps office spaces feel larger and
Door swing direction is one of the most common points of confusion when ordering a commercial door. It is also one of the easiest things to get right once you know what to look for.
The challenge is that small mistakes can lead to ordering the wrong door, delaying installation, or even failing inspection. Understanding door swing direction early makes the entire ordering process smoother.
What Is Door Swing Direction?
Door swing direction refers to the side of the hinges and the direction the door opens. In commercial doors, this is classified as left-hand (LH), right-hand (RH), left-hand reverse (LHR), or right-hand reverse (RHR).
Once you understand how these are determined, identifying the correct swing becomes straightforward.
How to Determine Door Swing Direction
To determine the door swing direction, stand on the hinge side of the door. If it swings left, it is left-hand. If it swings right, it is right-hand.
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Stand on the hinge side of the door
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If the door swings to your left, it
Installing a commercial door might seem straightforward, but the details can quickly add up. The type of door, frame, and opening all play a role in how smooth—or frustrating—the installation process will be.
Choosing the right setup from the start can save time, reduce labor, and help avoid costly mistakes on-site. Here’s a practical look at what to check before installation, which doors are easiest to work with, and what can slow things down.
Start With the Basics
Before beginning any commercial door installation, a few simple checks can prevent major issues later:
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Make sure the door and frame size match your rough opening
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Confirm whether you're working with drywall or masonry.
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Choose the right frame type for the application, will it butt up or wrap?
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Check that hardware is properly prepped
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Have the correct tools and anchors ready
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Review fire rating requirements if applicable
Skipping any of these steps can lead to delays, rework, or improper
How often do you think about the door you walk through every day? Probably not often, but when you’re responsible for sourcing commercial steel doors, suddenly every detail matters. From fire ratings and lead times to hardware compatibility and shipping schedules, the door you choose can make or break a project.
That’s where CDF Distributors stands apart. While big box stores may feel convenient at first glance, contractors, architects, and facility managers across the country are discovering that working with a specialized door distributor leads to better outcomes, especially when it comes to commercial steel double doors, steel exterior doors, and fire rated metal doors.
Let’s take a closer look at why CDF Distributors is the better choice for commercial metal doors.
CDF Distributors vs. Big Box Stores: A Clear Difference
Door Experts vs. Generalized Sales Staff
At big box stores, you’re often working with well-meaning associates
CDF Distributors provides three ways to order commercial door assemblies: online through ProBuilder, by phone at (855) 769-9895, or by email at sales@cdfdoors.com. ProBuilder is CDF’s proprietary online configuration tool and the fastest way to build a quote, select compatible components, and place an order. This FAQ covers the ordering and quoting process for hollow metal doors, hollow metal frames, wood doors, commercial hardware, and storefront systems available through CDF.
CDF ships from its Nashville, Tennessee headquarters and serves general contractors, subcontractors, facility managers, and building owners across the United States. Approximately 70 percent of CDF’s customer base consists of general contractors working on commercial construction and renovation projects.
About This Guide
This FAQ is published by CDF Distributors and reflects CDF’s standard ordering, quoting, and account procedures. The information applies to all product categories available through CDF, including
The rough opening for a commercial door frame depends on the frame type. For drywall wrap-around frames, add 2 inches to the nominal door width and 1 inch to the nominal door height. For masonry frames, add 4-1/4 inches to the nominal door width and 2-1/8 inches to the nominal door height. These formulas account for the jamb and header material that occupies space within the opening. Getting the rough opening correct is a critical first step in ordering the right size door and frame assembly.
CDF Distributors’ ProBuilder tool at cdfdistributors.com calculates rough openings automatically for every frame configuration, displaying both nominal and exact dimensions on every quote. For assistance, call (855) 769-9895 or email sales@cdfdoors.com.
Rough Opening Formulas
All door sizes referenced in rough opening calculations are nominal sizes, not exact sizes. A nominal 3’0” x 7’0” door is referenced as 36” x 84” in calculations. The rough opening formula varies by frame type because each type
Commercial storefront door systems are available in narrow stile, medium stile, and wide stile configurations, each designed for different traffic levels and glass area requirements. Glass options for storefront doors include tempered, laminated, insulated, and low e. This reference guide covers storefront door types, and glass specifications and the factors that determine which system to specify for a commercial project.
CDF Distributors supplies storefront door assemblies from its Nashville, Tennessee headquarters. You can configure and order complete door assemblies online using CDF’s ProBuilder tool at cdfdistributors.com. For assistance selecting the correct glass type or storefront configuration for your project, call (855) 769-9895 or email sales@cdfdoors.com.
About This Guide
This reference guide is published by CDF Distributors, a commercial door and hardware supplier headquartered in Nashville, Tennessee. CDF fabricates hollow metal door and frame assemblies in-house and supplies
Wall thickness determines which hollow metal door frame fits your opening. To measure wall thickness, place a tape measure against the outside face of the finished wall on one side and measure straight through the opening to the outside face of the finished wall on the opposite side. This measurement, taken from sheetrock face to sheetrock face, must match the throat size of the frame you order. An incorrect measurement results in a frame that is either too loose or too tight to install properly.
CDF Distributors’ ProBuilder tool at cdfdistributors.com allows you to select the exact wall thickness during frame configuration, ensuring the throat size matches your wall assembly. For assistance determining the correct frame depth for your project, call (855) 769-9895 or email sales@cdfdoors.com.
What Is Wall Thickness and Why Does It Matter?
Wall thickness is the total distance measured from the outside face of the finished wall material on one side of a partition to the outside face of the
CDF Distributors offers seven factory-applied stain colors and two base finish options for commercial wood doors. Stain options include Autumn Oak, Mahogany, Traditional Cherry, Golden Hickory, Dark Walnut, Ebony, and Dark Oak. Base door options are Unfinished (Rotary Natural Birch) and Clear Pre-Finished (Rotary White Birch). All stain and finish selections are available on solid core and mineral core wood doors, including fire-rated configurations up to 90 minutes for solid core and 90 minutes for mineral core construction.
You can select wood species, stain color, and core type during configuration in CDF’s ProBuilder tool at cdfdistributors.com. For assistance specifying wood doors for your project, call (855) 769-9895 or email sales@cdfdoors.com.
About This Guide
This reference guide is published by CDF Distributors, a commercial door and frame supplier based in Nashville, Tennessee. CDF fabricates and ships complete door, frame, and hardware assemblies to commercial contractors,
Understanding Fire and Smoke Door Inspection Failures, Compliance Gaps, and Remediation
This guide answers: What Happens If Healthcare Door Assemblies Fail Fire or Smoke Inspection
What Triggers a Fire or Smoke Door Inspection Failure in Healthcare
Healthcare facilities are subject to annual fire door inspections per NFPA 80 (Standard for Fire Doors and Other Opening Protectives) and NFPA 105 (Standard for Smoke Door Assemblies). The Joint Commission and Centers for Medicare and Medicaid Services (CMS) enforce these requirements as a condition of accreditation and reimbursement.
A failed fire or smoke door inspection can result in citations, required corrective action plans, and in severe cases, conditional accreditation status. Understanding common failure points helps facility managers and contractors avoid compliance gaps before inspection.
Common Fire Door Inspection Failures
NFPA 80 requires annual inspection of every fire-rated door assembly in the facility. Fire-rated door assemblies