Marvin Ultimate Casement Window

Marvin’s Passive House Institute U.S. (PHIUS)-certified window is available with tripane glass in a 1-3/8 inch profile, or quad glazing with Heat Mirror technology in a 1-inch profile. The tripane boasts a U-value of 0.18 and a solar heat gain coefficient of 0.349; the quad glazing version features a 0.19 U-value and 0.349 SHGC. Marvin offers six wood species options, nine factory-applied interior stain and paint finishes, and 19 standard exterior clad colors.