Turn three-point opening measurements into an installer’s nominal frame worksheet.
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Runs in your browser
Turn three-point opening measurements into an installer’s nominal frame worksheet.
Runs in your browser
Inputs are processed on this page and are never sent to a server.
Enter each measurement in its own numbered box. Use the unit shown beside this field. Subtract your manufacturer’s TOTAL horizontal and vertical clearances from the smallest measurements. Enter both diagonals to report their difference. Example clearances are not specifications. For rectangular in-opening installation only; not overlapping or behind-reveal frames.
W = min(w₁,w₂,w₃) − Gₓ; H = min(h₁,h₂,h₃) − Gᵧ; Δd = |d₁−d₂|
Nominal frame dimensions: 1,188 × 1,488 mm Not a fit approval: check square, plumb, depth and manufacturer instructions.
W = min(w₁,w₂,w₃) − Gₓ; H = min(h₁,h₂,h₃) − Gᵧ; Δd = |d₁−d₂|
Nominal frame dimensions: 1,188 × 1,488 mm Not a fit approval: check square, plumb, depth and manufacturer instructions.
No. The worksheet cannot reconstruct a warped opening. Check square, plumb, sill, depth and installation instructions before ordering; it does not calculate an out-of-square correction.
Calculations run on your device. Form inputs are not sent to a server.
The initial choice follows your browser region. Your choice is remembered on this device. Gallons are US gallons. Switching units keeps your numbers unchanged and interprets them in the new unit.
Numbers stay unchanged. Check the new unit and enter the intended measurement, or select an example for that system.
Subtract your manufacturer’s TOTAL horizontal and vertical clearances from the smallest measurements.
Enter each measurement in its own numbered box. Use the unit shown beside this field. mm / in
Minimum: 0.001 · Maximum: 1000000 mm
Subtract your manufacturer’s TOTAL horizontal and vertical clearances from the smallest measurements.
Enter each measurement in its own numbered box. Use the unit shown beside this field. mm / in
Minimum: 0.001 · Maximum: 1000000 mm
Subtract your manufacturer’s TOTAL horizontal and vertical clearances from the smallest measurements.
Enter a numerical value for this quantity. Use the unit shown beside this field. mm / in
Minimum: 0 · Maximum: 100000 mm
Subtract your manufacturer’s TOTAL horizontal and vertical clearances from the smallest measurements.
Enter a numerical value for this quantity. Use the unit shown beside this field. mm / in
Minimum: 0 · Maximum: 100000 mm
Enter both diagonals to report their difference.
Enter a numerical value for this quantity. Use the unit shown beside this field. mm / in
Minimum: 0.001 · Maximum: 2000000 mm
Enter both diagonals to report their difference.
Enter a numerical value for this quantity. Use the unit shown beside this field. mm / in
Minimum: 0.001 · Maximum: 2000000 mm
Enter each measurement in its own numbered box. Use the unit shown beside this field. Subtract your manufacturer’s TOTAL horizontal and vertical clearances from the smallest measurements. Enter both diagonals to report their difference. Example clearances are not specifications. For rectangular in-opening installation only; not overlapping or behind-reveal frames.
Calculated from your entries using the method below.
For rectangular in-opening installation only; not overlapping or behind-reveal frames.
Calculated from your entries using the method below.
For rectangular in-opening installation only; not overlapping or behind-reveal frames.
Calculated from your entries using the method below.
Enter each measurement in its own numbered box. Use the unit shown beside this field. Subtract your manufacturer’s TOTAL horizontal and vertical clearances from the smallest measurements. Enter both diagonals to report their difference. Example clearances are not specifications. For rectangular in-opening installation only; not overlapping or behind-reveal frames.
Calculated from your entries using the method below.
Enter each measurement in its own numbered box. Use the unit shown beside this field. Subtract your manufacturer’s TOTAL horizontal and vertical clearances from the smallest measurements. Enter both diagonals to report their difference. Example clearances are not specifications. For rectangular in-opening installation only; not overlapping or behind-reveal frames.
Calculated from your entries using the method below.
Use the unit shown beside this field.
Calculated from your entries using the method below.
Enter each measurement in its own numbered box. Use the unit shown beside this field. Subtract your manufacturer’s TOTAL horizontal and vertical clearances from the smallest measurements. Enter both diagonals to report their difference. Example clearances are not specifications. For rectangular in-opening installation only; not overlapping or behind-reveal frames.
Calculated from your entries using the method below.
Enter both diagonals to report their difference.
Calculated from your entries using the method below.
Mistake: Changing units and assuming the entered numbers were converted.
Fix: Numbers stay unchanged. Check the new unit and enter the intended measurement, or select an example for that system.
Mistake: Treating a result as valid outside the described scope.
Fix: No. The worksheet cannot reconstruct a warped opening. Check square, plumb, sill, depth and installation instructions before ordering; it does not calculate an out-of-square correction.
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