How To Measure Your Window For Screens. Again, you will want to measure. Please measure from the corner and not the distance between the center.
Place your screen on a workbench or any flat surface. The best way to measure for new window screens is by measuring the old screens. Assumes you have existing old window screens to measure.
Fit the little tape measure in the deeper groove side of the channel.
Measure it from there to the edge of the other side. Measure the longest side next, measure the longest side of your window screen. Measure the height and widths of the screen along the outside edge of the aluminium frames. Again there will be variances in the depths of the recesses for different window manufacturers.