A Practical Guide to Standard Door Sizes & Configurations in Australia

When planning a project—whether it’s an industrial shed, modular building, or commercial facility—door sizing and configuration decisions often seem straightforward… until they’re not.

“Standard” can mean different things depending on the application, and choosing the right configuration early can save time, cost, and frustration during installation.

This guide breaks down what standard door sizes actually mean in Australia, what configuration options are available, and when a custom solution may be worth considering.

Quick Answer: What Are Standard Door Sizes in Australia?

For most industrial and commercial applications in Australia, common personal access door sizes include:

• 2040mm (H) x 820mm (W) – most common
  
  • In Australia, disabled (accessible) compliant doors have 850mm (W) clear door opening
• 2040mm (H) x 920mm (W) – wider access
• 2040mm (H) x 1100mm (W) – high-traffic or equipment access

These sizes are widely used across sheds, warehouses, and modular buildings because they align with common framing and construction practices.

However, “standard” is best thought of as a starting point—not a limitation.

What Does “Standard” Actually Mean?

In practice, “standard door size” refers to:

• Commonly manufactured dimensions
• Sizes that suit typical wall openings
• Configurations that are readily available and cost-effective

But in real-world projects, doors are rarely chosen in isolation. They are influenced by:

• Wall construction and framing
• Access requirements (people, equipment, pallets)
• Hardware selection (locks, closers, panic hardware)
• Environmental conditions (wind exposure, usage frequency)

That’s why standard sizes are often adapted or configured rather than used exactly as-is.

Common Door Configurations Explained

Beyond size, configuration plays a major role in how a door performs on-site.

1. Single Doors (Most Common)

• One leaf, typically in standard widths (820–1100mm)
• Suitable for general personnel access
• Can be configured with various hardware options

Best for:
Sheds, warehouses, plant rooms, and general access points

2. Double Doors

• Two door leaves opening from the centre
• Can include equal or unequal leaf sizes
• Often paired with different hardware setups

Best for:
Wider openings, equipment access, or higher traffic areas

3. Left-Hand vs Right-Hand Opening

Door handing affects installation and usability:

• Left-hand opening – hinges on the left
• Right-hand opening – hinges on the right

This is usually determined by:

• Site layout
• Safety considerations
• Workflow direction

4. Inward vs Outward Opening

Doors can be configured to open:

• Inward – common for internal or sheltered applications
• Outward – often preferred for external doors or where space is limited

The choice depends on:

• Available clearance
• Safety requirements
• Environmental exposure

5. Pre-Hung Door Systems

Pre-hung doors come complete with:

• Frame/jamb
• Hinges
• Pre-prepared hardware cut-outs

These systems are designed to support:

• Faster installation
• More consistent fitment
• Reduced on-site adjustments

When Standard Sizes May Not Be Enough

While standard sizes work for many applications, there are situations where adjustments or customisation may be considered:

1. Non-Standard Openings

Older structures or modular builds may not align with typical dimensions.

2. Specific Access Needs

Projects involving:

• Trolleys or equipment
• High foot traffic
• Accessibility considerations

…may benefit from wider or differently configured doors.

3. Environmental Factors

Wind exposure, usage frequency, and location can influence:

• Door construction
• Hardware selection
• Installation method

4. Integration with Other Systems

Doors may need to work alongside:

• Access control systems
• Closers or hold-open devices
• Safety hardware

In these cases, a configured solution often makes more sense than forcing a standard size to fit.