Many cooling units have slightly round corners, rather than a hard 90 degree angle corner. If needed, you can choose to round some or all of your cover's corners. Click the + button next to the corners you need rounded, then enter in the radius measurment which tells us how much to round the corners.

The picture above is of the top of an a/c unit with rounded corners. Typically, the easiest way to find the radius is to place a straight ruler along both edges of the unit, and measure the distance from where the corner first starts to curve to where the rulers intersect. As shown in the picture, this distance will be equal to the radius of the corner.

*Note: If a corner has a radius of 1" or less, you can mark it as square. A radius that small won't make any difference.

If you have any questions about how to find the radius of your rounded corners, please email us at or call us toll free at 800.657.6394. We will be happy to help you place your order.