PDF GUIDEPrintable guide · 1 pagemeasuring
How to measure an opening
Capture the door width, height, and rough opening without mixing up the measurements.
Measure correctly. Choose confidently.
Doors & More Learning Center
Download illustrated PDF guides to measure openings, understand frame depth and handing, read fire labels, and build a better order.
Learning resource library
PDF GUIDEPrintable guide · 1 page
PDF GUIDEPrintable guide · 1 pagedoors frames
How to measure frame throat
Measure the finished wall and frame throat so the jamb depth fits the opening.
PDF GUIDEPrintable guide · 1 pagehanding
Door handing made simple
Use the outside/key side and the hinge position to identify LH, RH, LHR, or RHR.
PDF GUIDEPrintable guide · 1 pagemeasuring
Door width vs. rough opening
See how nominal door size, frame opening, and rough opening relate before you order.
PDF GUIDEPrintable guide · 1 pagehardware
Measure hinge and lock locations
Learn where preparation measurements start and what must match on a replacement opening.
PDF GUIDEPrintable guide · 1 pagefire safety
Understanding fire labels
Read the opening label and keep the door, frame, and hardware assembly compatible.
PDF GUIDEPrintable guide · 1 pagedoors frames
Choosing jamb depth
Match the frame profile to the finished wall construction and measured thickness.