Kohler K-702210 Guia De Instalacion página 5

Measure and Cut the Header, the Header Expander, and the Threshold (cont.)
Carefully measure the width (B) of the finished opening.
Subtract 1/2" (1.3 cm) from the width measured and cut the header, header expander, and threshold
to this dimension. For best results, use a 32-teeth per inch hacksaw blade and a miter box.
NOTE: When cutting the header, make sure to cut the end opposite the Kohler logo.
Use a file to remove any burrs where the cuts were made.
Kohler Co. 5 1015287-2-B