Top Down (TD) is the top-down privacy/light-control option available on cordloop honeycomb blinds. It allows the blind to be lowered from the top of the opening downward, so you can block the bottom portion for privacy while keeping natural light coming in from above
The key difference vs true TDBU is this: with TD (cordloop) you can’t have the blind floating in the middle with clear space both above and below at the same time. The system works in a set order — the bottom rail must be lowered before lowering the middle rail — to expose the top part of the window — and the middle rail must be raised before raising the bottom rail
