How to find the right dimensions for your whirlpool cover.
When measuring length and width, make sure you give us the measurements in centimeters and always round up to the nearest centimeter. When measuring, a little too much is better than a little too little. One centimeter too much in length won't make much difference, the cover will still fit, but one centimeter too little and the spa cover won't fit at all.

Classic whirlpool bath
Measure at the widest point of the acrylic edge as indicated by the arrows

Whirlpool with railing ring
Measure at the widest point on the railing, as indicated by the arrows

Embedded in the floor
Measure at the widest point on the floor, as indicated by the arrows
Determine A and B
Here you can see the difference in folding
The dotted line shows the folding of the lid

Measure radius correctly
The most important thing is that you do NOT choose a radius that is too large. If you measure the radius too large, it will NOT cover the radius corner. If you measure the radius too small, this is not a problem. The lid may then protrude a little, but this is hardly noticeable. So if in doubt, always measure a little smaller than a radius that is too large.
