Welcome to ASCA, Inc. Architectural Sun Control Devices ASCA, Inc. offers an infinite assortment of architectural sun control devices, including exterior sunshades, screening... devices and daylighting systems. Sustainable architectural designs from dynamic climate control fa ades to ornate static systems, are the result of implementing ASCA exterior sun... control devices. Reflexive architectural sunscreens may be designed to shade entire or partial areas for critical times of day or seasons in the year. ASCA's interior lightshelves...