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Measuring RV window Corner Radius

Windows with rounded “radius corners” are common. On RV windows, the usual radius is 3″ but don’t assume – measure! There are several ways to determine the corner radius.

  1. Using a carpenter square – align the inside edges of the square along the sides of the hole and read on the scale the point where the curve starts. This works only for square or rectangular openings.

  2. Using a tracing – Trace the corner curve onto a sheet of paper or cardboard. For square corners, the straight lines can be extended and the radius determined as with a carpenter’s square. Pelland Industries Window FAQ 4 shows how to do this.
  3. For other angles, the radius can be determined using a compass and straightedge and a little basic geometry.

  4. Using found objects – Collect a variety of cylinders (coffee cans, soup cans etc) and match them to the curve. Once an exact match is found, its diameter can be taken with the tape measure. The radius is half the diameter.

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Phone:+8618123840848

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