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Run: Window Frame Corner Squareness and Reveal Check

Use this window frame corner squareness and reveal check to verify diagonal alignment, perimeter reveal uniformity, and sash fit after assembly. It helps cat...

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Inspection Setup and Identification

Frame identification recorded

Record the frame or job number, size, and assembly line/cell identifier.

Inspection performed on completed assembly critical (required)

Confirm the frame has completed assembly and is ready for squareness and reveal verification.

Yes No N/A

Measuring tools available and calibrated critical (required)

Verify that tape measure, diagonal gauge, square, or other required measuring tools are available and within calibration or verification status.

Yes No N/A

Corner Squareness and Diagonal Check

Top-left to bottom-right diagonal measured

Enter the measured diagonal length for the frame.

Note (optional)

Top-right to bottom-left diagonal measured

Enter the measured diagonal length for the frame.

Note (optional)

Diagonal difference within tolerance critical (required)

Record the absolute difference between diagonals. Equal or near-equal diagonals indicate a square frame.

Frame corners visually square and fully seated critical (required)

Check that all corners are tight, aligned, and fully seated with no visible twist, gap, or distortion.

Yes No N/A

Reveal Uniformity Check

Reveal measured at top, bottom, left, and right

Select all locations where reveal measurements were taken.

Note (optional)

Reveal uniform across perimeter critical (required)

Record the maximum reveal variation across the frame perimeter.

No binding, rubbing, or interference at reveal points critical (required)

Verify that the reveal is consistent and does not create interference that could affect sash fit or operation.

Yes No N/A

Reveal visually consistent with product specification

Confirm the reveal appearance and spacing match the approved specification or work instruction.

Yes No N/A

Fit, Operation, and Non-Conformance Review

Sash fit verified against frame opening critical (required)

Confirm the assembled frame supports proper sash fit without excessive gap, pinch points, or misalignment.

Yes No N/A

Frame operation acceptable after assembly

If applicable, verify the frame and sash operate smoothly without binding, drag, or abnormal resistance.

Yes No N/A

Non-conformances documented and dispositioned critical (required)

Document any deficiency, rework requirement, or hold status for the frame if measurements are out of tolerance or fit is not acceptable.

Yes No N/A

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