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How Are Replacement Doors Measured?

Published in Door Measurement 2 mins read

Measuring for replacement doors involves carefully taking dimensions within the existing door frame to ensure a proper fit.

Essential Measurements for Replacement Doors

When preparing to replace a door, accurate measurements are crucial for ordering the correct size unit. The key dimensions typically needed are the width and the depth of the existing door frame.

Measuring the Door Width

To determine the correct width for your replacement door unit, you need to measure the existing frame horizontally in multiple locations.

  • Take measurements near the top, middle and bottom of the frame.
  • Record each of these measurements.
  • Write down the largest of these measurements as the width of the door unit. This ensures the new door unit will fit within the narrowest point of the existing opening.

Measuring the Door Depth

The depth measurement helps determine the frame thickness needed for the replacement door unit to fit correctly within the wall structure.

  • Measure the depth of the frame from the inside edge to the outside edge.
  • It is important to take this measurement excluding brickmould and trim pieces. These decorative elements are typically on the exterior and interior respectively and are not part of the structural frame depth.

By obtaining these precise width and depth measurements, you can select a replacement door unit that is appropriately sized for the existing opening, simplifying the installation process.

Summary of Key Measurements

Here's a quick overview of the measurements you need:

Measurement How to Take It What to Record
Width Top, middle, and bottom of frame Largest measurement
Depth Inside edge to outside edge of frame Measurement excluding trim

Taking the time to measure accurately following these steps will help ensure your new replacement door fits perfectly.

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