The Silhouette offers simplistic and modern styling that will look great in any home. Made in an anodized aluminum frame in an extra strong hollow tube side mold design and color coordinated glazing vinyl and aluminum track. The Silhouette features a harden steel extra-heavy 18-gauge steel housings Ultraglide channel and heavy gauge aluminum extrusions that conceal its 1-1/2 diameter wheels. The Silhouette comes standard with Mystique™ 3 Duratuf tempered glass. The top channel and bottom track comes in an extruded aluminum finish to match 2-1/4 deep Ultraglide.