Your entry door is the first thing guests see and the last line of defense against the elements. Whether you are building a custom luxury villa, renovating a commercial space, or sourcing for a large-scale development, getting the
entry door sizes right saves you time, money, and headaches down the road. This guide walks you through standard dimensions, custom sizing options, material choices, and how to find the right manufacturing partner for your project.
What Are the Standard Entry Door Sizes?
Across most residential and commercial construction projects, entry doors follow a well-established set of standard dimensions. The most common configuration is 80 inches tall by 36 inches wide, with a thickness of 1 3/4 inches. This size has become the industry benchmark because it accommodates moving furniture, meets building code requirements in most jurisdictions, and provides comfortable daily passage.
That said, entry doors are not one-size-fits-all. Here is a quick overview of the standard sizes you will encounter:
| Door Type |
Standard Height |
Standard Width |
Thickness |
| Single Entry Door |
80 inches |
36 inches |
1 3/4 inches |
| Double Entry Door |
80 inches |
60–72 inches (total) |
1 3/4 inches |
| Custom Oversized Door |
Up to 120 inches |
Up to 96 inches |
2–3 inches |
In many markets, you will also find narrower options at 30, 32, or 34 inches wide, though these are typically reserved for secondary entrances or utility access points. For the main entrance, the 36-inch width remains the gold standard.
Why Getting Entry Door Sizes Right Matters
Door dimensions are not just numbers on a spec sheet. Choosing the wrong size can lead to a cascade of problems that are expensive to fix after installation.
- Building code compliance: Most jurisdictions mandate minimum door widths for safety egress. A door that is too narrow can fail inspection and delay your project timeline.
- Energy efficiency: A poorly fitted door creates gaps that let conditioned air escape. Even a quarter-inch discrepancy can noticeably impact your heating and cooling costs over time.
- Security: An entry door that does not sit flush within its frame is harder to lock securely. Multi-point locking systems, which are standard on high-quality aluminum doors, require precise sizing to function correctly.
- Accessibility: The Americans with Disabilities Act and equivalent international standards require a minimum clear opening width of 32 to 36 inches for wheelchair access. This is not just a commercial requirement — more homeowners are future-proofing their properties with wider entryways.
- Aesthetic proportion: An undersized door on a grand facade looks out of place. The right proportions complement your building's architecture and enhance curb appeal.
When Standard Sizes Are Not Enough: Custom Entry Doors
Not every project fits neatly into a standard size chart. Luxury residences with double-height entrances, boutique hotels with distinctive architectural features, and commercial lobbies designed to impress all demand doors that go beyond off-the-shelf dimensions. In these cases, you need a manufacturer that can produce custom-sized doors without compromising on quality or lead time.
This is where working with experienced
entry doors manufacturers becomes critical. A factory-direct partner can adjust frame widths, sash profiles, and glass configurations to match your exact opening — whether you need a 10-foot-tall pivot door, a wide double entry system, or a triple-panel configuration for a commercial storefront.
When evaluating manufacturers for custom entry door projects, look for these capabilities:
- In-house aluminum extrusion and profile design capabilities
- Thermal break technology for energy efficiency across all sizes
- Experience with international building codes and standards
- A portfolio of completed projects that demonstrates custom sizing expertise
- Direct-from-factory pricing that makes custom dimensions affordable
Aluminum Entry Doors: The Smart Material Choice
When it comes to material selection for a
modern entry door, aluminum has rapidly become the preferred choice for architects, builders, and property developers. Here is why aluminum outperforms traditional wood and steel options:
- Strength-to-weight ratio: Aluminum is remarkably strong for its weight. A 6060-T66 grade aluminum profile — the standard used by top manufacturers — offers excellent structural rigidity without the bulk of steel or the warping risk of wood.
- Corrosion resistance: Unlike steel, aluminum does not rust. It withstands coastal salt spray, high humidity, and extreme temperature swings without degradation. Quality manufacturers subject their profiles to 240-hour salt spray corrosion resistance tests to verify long-term durability.
- Thermal performance: Modern aluminum entry door systems incorporate multi-chamber thermal break technology using PA66GF25 insulation strips. This design separates the interior and exterior aluminum faces, dramatically reducing heat transfer. Top-tier systems achieve K-values as low as 1.3, meeting passive house standards.
- Design flexibility: Aluminum profiles can be powder-coated in virtually any color. Popular finishes include Ice Cream White, Aurora Gray, Starry Sky Gray, and Brown Coffee, with custom color matching available for branded projects.
- Low maintenance: Unlike wood doors that require periodic sanding, staining, and sealing, aluminum entry doors need only occasional cleaning with mild soap and water to maintain their appearance for decades.
How to Measure for an Entry Door
Before contacting a manufacturer, you need accurate measurements. Here is a simple three-step process:
Step 1: Measure the Height
Use a tape measure to check the height at three points: the left side, the center, and the right side of the opening. Record the shortest measurement. This accounts for any unevenness in the floor or header.
Step 2: Measure the Width
Measure the width at the top, middle, and bottom of the opening. Again, use the shortest measurement. For double doors, measure the total opening width and divide as needed.
Step 3: Measure the Wall Thickness
Open the existing door (if there is one) and measure the depth of the door slab. For new construction, measure the wall thickness including drywall or finish materials on both sides. This determines the jamb depth your new door system requires.
Pro Tip
When ordering custom doors from a manufacturer, always provide the rough opening dimensions rather than the existing door slab dimensions. A professional manufacturer will calculate the appropriate frame and sash sizes to ensure a proper fit with the correct clearances for sealing, hardware, and thermal expansion.
ALPES: Your Partner for Premium Aluminum Entry Doors
When you need an entry door that combines precise sizing, premium materials, and competitive pricing, ALPES delivers. As a professional system window and door manufacturer based in Guangdong, China, ALPES operates a 100,000-square-meter production facility with two manufacturing centers in Foshan and Zhaoqing, serving clients across the Middle East, Australia, Europe, and beyond.
What Sets ALPES Apart
- Premium aluminum profiles: All doors are crafted from 6060-T66 grade aluminum with profile thicknesses ranging from 1.8mm to 2.5mm, meeting and exceeding the latest national standards for structural integrity.
- German-engineered hardware: ALPES partners with ROTO, Winkhaus (169 years of German engineering), CMECH (Red Dot Design Award winner), and Wehag to equip every door with precision hardware tested for tens of thousands of operating cycles.
- Advanced thermal break technology: Multi-chamber PA66GF25 insulation strips separate interior and exterior aluminum profiles, achieving K-values as low as 1.3 for superior energy performance in any climate zone.
- Custom sizing, no compromise: Whether you need a standard 36x80-inch entry door or a 10-foot-tall custom pivot door, ALPES manufactures to your exact specifications with the same rigorous quality control applied to every order.
- Global project experience: From luxury villas in Saudi Arabia and Dubai to modern residential projects in Australia, ALPES has a proven track record of delivering high-end aluminum doors that meet international standards and exceed client expectations.
- Factory-direct pricing: By working directly with the manufacturer, you eliminate intermediary markups and gain access to wholesale pricing on custom-sized doors without sacrificing quality.
Frequently Asked Questions About Entry Door Sizes
Can I get an entry door in a non-standard size?
Absolutely. Professional manufacturers like ALPES produce entry doors in virtually any dimension. Custom sizes are common for luxury homes, commercial projects, and renovations where the existing opening does not match standard dimensions. The key is working with a manufacturer that has the engineering capability and production flexibility to handle custom orders efficiently.
What is the difference between a slab door and a pre-hung door?
A slab door is just the door panel itself — no frame, hinges, or hardware. A pre-hung door comes mounted in its frame with hinges attached and a pre-cut hole for the lock. For exterior applications, pre-hung systems are recommended because they ensure proper weather sealing between the door and frame. Most manufacturers, including ALPES, can supply either configuration.
How thick should an aluminum entry door be?
Standard aluminum entry doors use profiles with wall thicknesses of 1.8mm to 2.5mm, depending on the door size and structural requirements. For large or heavy doors, critical stress areas may be locally reinforced up to 3.0mm. The overall door slab thickness typically ranges from 1 3/4 inches to 3 inches for insulated thermal break systems.
Are aluminum entry doors energy efficient?
Yes, when built with thermal break technology. Modern aluminum entry doors use polyamide insulation strips (PA66GF25) to create a thermal barrier between the interior and exterior aluminum faces. This multi-chamber design dramatically reduces heat transfer. High-performance systems can achieve K-values as low as 1.3 W/m²K, making them suitable for passive house and net-zero energy buildings.
Ready to Get the Perfect Entry Door for Your Project?
Whether you need a single custom-sized entry door or a bulk order for a multi-unit development, ALPES has the manufacturing capacity, engineering expertise, and global logistics experience to deliver. Our team will work with you to confirm the right dimensions, ｓｅｌｅｃｔ the ideal finish and hardware, and provide a competitive quote with no hidden costs.
Contact ALPES today to discuss your project requirements. Reach us at
jennifer@alpesvip.com or via WhatsApp at
+86 18200804101. Visit
www.alpeswindow.com to explore our full range of aluminum windows and doors.
