How to measure for a new cover for your spa.
In order to get the right size cover for your spa you need to measure the length, width (the distance of the seam), the radius of the corners, the height of the spa lip or skirt, and the color.

For this particular shape we will require all of the measurements shown.
Measure the outside edges of the spa shell.

A: Width or Hinge Length - distance from one side of the seam to the other.

B: Length - distance from one side of the spa to the other.

It is better to be slightly too big than too small.

How to measure a radius corner

You will need two rulers or yard sticks (a framing square is a great tool to use). Place them at a 90 degree angle on the outside edge of the corner with the "0's" together. You will measure from the 0" mark to the breaking point "where the corner starts to curve".

From the 0" mark to the breaking point is the size of your corner radius.

How to measure skirt length

We also need to know what length of skirt you need around the edge.
Standard skirts are 4" inches unless you need more or less.