In an effort to keep the structural components as slim as possible the ... The standard minimal curtain wall version comes with a perimeter frame that can be hidden in the building structure.

Permasteelisa Group on Tuesday said it bought the Portland-based Benson, the engineer of exterior building components known as “curtain walls,” which envelop high rises in glass and aluminum.

The sweeping, segmented EFCO curtain wall welcomes people arriving to DUQCOM from the Forbes Avenue Plaza. Passing through ...