Billowing: Things to Know
Displaced air (often trapped behind the drapery) prevents the room from properly cooling and billows the drapery into the room.
PTAC deflectors are offered in various widths, depths, and angles. A deflector can redirect airflow from the PTAC unit to allow air to properly vent the room without affecting drapery treatments.
Window treatments require 3” of depth behind and in front of the track allow both treatments to operate properly and hang aesthetically. If you have two tracks, one for the sheer and one for the blackout treatment, you will need at least 6”.
Drapery treatments are also specified to finish 1/2” to 3/4” above the finished floor or window sill, minimizing the light leakage below the treatments.