Last updated: October 28, 2026
Door sizes are quoted two ways: the nominal size people refer to, and the actual slab dimension you order. Mixing them up causes delivery errors on site. This guide explains the difference and how to write a door schedule correctly.
Nominal vs Actual
Common nominal sizes such as 30×80 or 36×80 are rounded references. The actual slab is smaller to fit the frame: for example, a nominal 36-inch door is commonly a 35-3/4-inch slab. Always read the schedule in actual dimensions.
Rough Opening and Frame
The rough opening is the framed hole in the wall, larger than the frame itself. The frame adds jambs and allowances; the slab sits inside. Confirm all three numbers — rough opening, frame size, slab size — before production.
Writing a Schedule
A good door schedule lists each opening: room, swing, size, material, finish and hardware. For projects, Jusen produces doors directly from the schedule with room-number labelling for phased delivery.
FAQ
Which size should I order — nominal or actual?
Order by actual slab dimensions, or send the full schedule and we will convert it for you.
Do you produce non-standard sizes?
Yes, any width and height within practical limits can be custom-produced.
Get a Factory Quote
Send your door schedule for a size-checked factory quotation.
