LightLock Blackout System
By quote
Hunter Douglas's room-darkening enhancement for Duette cellular shades. U-shaped side channels with ridged black interiors that absorb and deflect the light that normally leaks around the edges of blackout shades. Paired with PowerView motorization for scheduled open/close. The reason the Austin master bedroom reads hand-in-front-of-face invisible — not the shade fabric, the edge seal.
