Exact Measurements	When entering the dimensions of your cooler cover, it is important to put the measurements of the unit itself, not the size you want the cover to be. We will add necessary amounts to allow easy fit and to compensate for any shrinkage in the material. You just need to enter the size of the cooling unit. If your cooler's measurements are in fractions of an inch (1/4", 3/4", etc.) round your measurement up to the nearest 1/2". So if your height is 35.25", round up to 35.5". If your height is 27.75", round up to 28".
Measurements S1 & S2	These dimensions are the measurements of each side of the cooling unit. Some coolers may be the same size on all 4 sides (a square). When ordering a rectangular cover with a slit up the corner, you need to pay attention to how you label your sides so that the slit comes out in the correct corner. The easiest way to do this is to stand facing your unit as shown in the picture above, and lable each side accordingly.
Measurement H	Measurement H is the height of your cover. To find the height, measure the distance from the ground to the top of your unit.
Measurement A	Measurement A is the distance from the bottom of the cooler cover to the top of the slit in the cover. Leaving yourself a little extra room to ensure a proper fit won't hurt at all. If your cover doesn't require a corner slit, leave it blank or enter a 0 (zero).