Classic look with modern-day innovations and engineering.
The French Casemasters' unique design allows them to open outward like a French door leaving you with no center post obstruction - just beautiful, wide open views. French Casemasters combine a classic look of the past with modern-day innovations and engineering so their true beauty remains timeless.
Casemasters are a fine example of what a hard working window should be. Their sleek, modern engineering even extends to the folding handle, which is designed not to interfere with window treatments. They offer expansive views and ample air circulation plus a structural integrity to protect against air and water infiltration. The Marvin Casemaster meets WDMA DP50, one of the Window and Door Manufacturers Association's best ratings for air and water infiltration and structural integrity.