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How To Measure For Replacement Hollow Metal Steel Doors

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How To Measure For Replacement Hollow Metal Steel Doors

This video guide below goes over how to properly measure for a replacement door only for your existing door frame. This guide is for customers who are only looking to replace their existing door only and not the frame.

Step 1:

Determine your door size. Measure the door from the top to the bottom. Keep in mind hollow metal door and frame sizes are always nominal. As an example, if you door measures exactly 35-3/4" x 83-1/8", then the door size you would order would be 3'0" x 7'0" Door. Here is a break down of the common door widths and heights.

Common Door Widths:
2'6" (30 Inch) Door Width (Actual Size 29-3/4")
2'8" (32 Inch) Door Width (Actual Size 31-3/4")
2'10" (34 Inch) Door Width (Actual Size 33-3/4")
3'0" (36 Inch) Door Width (Actual Size 35-3/4")
3'4" (40 Inch) Door Width (Actual Size 39-3/4")
3'6" (42 Inch) Door Width (Actual Size 41-3/4")
3'8" (44 Inch) Door Width (Actual Size 43-3/4")
4'0" (48 Inch) Door Width (Actual Size 47-3/4")

Common Door Heights:
6'8" (80 Inch) Door Height (Actual Size 79-1/8")
7'0" (84 Inch) Door Height (Actual Size 83-1/8")
8'0" (96 Inch) Door Height (Actual Size 95-1/8")

Step 2:

Determine the hinge prep and lock height. Each door manufacturer uses different hinge prep location and lock height locations. Start by measuring the each hinge location from the top of the door to the bottom of each hinge. For the lock hole, measure from the top of the door to the center line of the lock.

Step 3:

Cross reference your measurements with the door hinge and lock prep chart below. Confirm the model you need.

Step 4:

Determine What lock preparation you require. C Prep is most standard which accepts commercial 2-3/4" backset cylindrical door locks. However, there is also the "MB" mortise prep designed to accept mortise door locks. You will want to make sure you choose the correct lock preparation so that you can reinstall your existing hardware from your original door. We also offer replacement door hardware if you wish to include new door hardware.

Step 5:

Order the correct door model you need on our website. Of course if you need additional help, feel free to contact us at and a technical expert will be more than happy to assist you!

How To Measure For Replacement Hollow Metal Doors Video Guide:

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