Window Measuring Guide

For SJRV rounded-corner and square-corner replacement windows. Measure the complete black outer frame in millimetres (mm), then subtract 30 mm from each dimension to estimate the matching website size.

Measure the full outer frame. Deduct a total of 30 mm from the width and 30 mm from the height.

01 / WIDTH

Measure left to right

Place the tape horizontally from the outer left edge of the black frame to its outer right edge. Keep the tape straight and read at the right outer edge.

Horizontal tape spans the complete black window frame. Circled start and reading points align with the outer left and right edges.

Read at the outer right edge of the frame.

02 / HEIGHT

Measure top to bottom

Place the tape vertically from the outer top edge of the black frame to its outer bottom edge. Keep the tape straight and read at the bottom outer edge.

Vertical tape spans the complete black window frame. Circled start and reading points align with the outer top and bottom edges.

Read at the outer bottom edge of the frame.

03 / WEBSITE SIZE

Subtract 30 mm from each measurement

For both rounded-corner and square-corner SJRV windows, deduct a total of 30 mm from the full outer-frame width and a total of 30 mm from the full outer-frame height.

Approx. website widthOuter-frame width − 30 mm

Approx. website heightOuter-frame height − 30 mm

Example

DimensionMeasured outer frameApprox. website size
Width930 mm − 30 mm900 mm
Height530 mm − 30 mm500 mm

In this example, look for Height: 500 mm and Width: 900 mm on the product page.

Before you order

The 30 mm deduction is an approximate sizing guide for both SJRV window styles. Confirm the selected model's required wall opening and fitment requirements before ordering.

Wall cut-out

Confirm the required wall opening for the selected model and size.

Finished wall thickness

Check the complete wall thickness, including the interior finish.

Corner profile

Check the rounded or square profile and required opening shape.

Operating space

Allow space for the opening pane outside and the blind/flyscreen frame inside.

Rounded corner window specificationsSquare corner window specifications

Illustrations explain the measuring method only and are not to scale. Contact SJRV if you are unsure about any fitment detail.

OPTIONAL HELP

Not sure which size to choose?

If you are unsure which size to choose, or your result does not match a listed size, email us for help. Contact .

Include your original outer-frame width and height, the calculated website size, and whether your window has rounded or square corners.

Ask SJRV for sizing help

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Download measuring guide (PDF)