It is best if you measure your existing cover and not your spa. In order to get the proper length and width, measure across the seam, then perpendicular to that.

If you do not have a cover to measure from, then you must measure all the outside dimensions of the spa. The cover has a 2" flap around the edges of the spa called a skirt. The skirt must easily sit over the edges of the spa, with a little room to spare.

It is always better to make the cover size a little bit bigger than your spa when measuring. If you make a mistake, and measure too small, the cover will not fit properly, will not sit flat and will not hold the heat in.

All covers come with Tie Downs and locks that can either be attached to the wood spa cabinet or be screwed to a deck.

Spas come in a variety of "standard" shapes. Determining your unit's shape will help you order the proper cover:

• Square = L x W
• Rectangle = L x W
• Square with cut corners = L x W x Cut Corner Dimension
• Rectangle with cut corners = L x W x Radius Dimension
• Square with rounded corners = L x W x Radius Dimensions
• Rectangle with rounded corners = L x W x Radius Dimension
• Square with one cut corner = L x W Cut Corner Dimension
• Square with two cut corners = L x W x Cut Corner Dimension
• Ellipse or taper = Must supply a template and/or specific make, year and model of spa
• True Octagon = L x W x Dimension of one side
• Off-set Octagon = L x W x Dimension of each side (8 total)
• Six Sided = L x W x Dimension of each side (6 total)
• Round = Diameter

Radius Corners

• Method # 1 for determining radius: To determine the radius of your cover's corners, take a sheet of paper and trace around one of the curved corners of the cover. You will get a curved line similar to those shown at the left. Remove the paper and complete the circle. You can do this freehand. Then measure across the middle of the circle you drew, and divide by 2.
• Method # 2 for determing radius: Another way to measure the radius is by placing a carpenter's square on the outside of your spa. The distance between the corner of the carpenter's square and the place where it touches the spa (A) equals the radius of the curve (B).