Performance Class & Grade

If you need more specific information than what is provided in the search results, please use the contact form below.

ProductKolbe PerformanceProduct ConfigurationAir Tested to psfWater Tested to Pa (psf)Performance Class and GradeDesign Pressure Pa (psf)Max WidthMax HeightFL #TDI #
PositiveNegativeInches (mm) Inches (mm)
Heritage Series Traditional Double HungStandardSingle1.57580 Pa (12.11 psf) CW-PG80 FW+3840 Pa (80.20 psf)-3840 Pa (80.20 psf)96243860152413091WIN-1917
Heritage Series Traditional Double Hung PictureStandardSingle1.57180 Pa (3.76 psf) LC-PG25 H+1200 Pa (25.06 psf)-1200 Pa (25.06 psf)45.5115680.44204310398In Process
Heritage Series Traditional Double HungStandardSingle1.57180 Pa (3.76 psf) LC-PG25 FW+1200 Pa (25.06 psf)-1200 Pa (25.06 psf)77.5196880.44204310398In Process

Contact Us

Can't seem to find what you are looking for? Get in touch with one of our experts!