Features:
- One Man Installation in 3-4 Minutes
- No special tools needed to adjust damper or change collar size.
- No Condensation
- Better Airflow
- Less Noise
- Scratch Resistant
- No visible seams on corners
- Paintable Faceplate
- No Rusting
- Butterfly damper can't be over opened
- Suitable for dropped ceilings
- No assembly required