Standard Exterior Door Dimensions
Standard US residential exterior (entry) doors are 36 inches wide and 80 inches tall. The extra 4 inches over interior doors makes them the easiest path for moving large furniture in and out.
How wide is a standard exterior door?
Standard exterior doors are 36 inches wide and 80 inches tall, per IRC 2021 Section R311.1. This is 4 inches wider than interior doors.
Source: IRC 2021 Section R311.1
Dimensions
What Fits Through a 36" Door?
Frequently Asked Questions
Why are exterior doors wider than interior doors?
Building codes require at least one 36-inch exit door for safety egress. The wider opening also accommodates wheelchair access, large appliance delivery, and furniture moves.
What is the largest furniture that fits through a 36-inch exterior door?
Most furniture fits through a 36" door: king mattresses on edge, 3-seat sofas on their side, large dressers, and most appliances. Items with a smallest dimension over 34" may still be challenging.
Can I use the exterior door as my primary furniture moving path?
Yes — the front or back door is almost always the best path for large furniture. At 36", it offers 4" more clearance than interior doors and often has a straight path without hallway corners.
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