Series 20
Smoke Damper
UL Classified UL 555S
Meets NFPA Standard 90A ICC Building Codes
Specifications:
Leakage Classes
Class 1 – Ultra-Low
Class 2 – Low
Material
Galvanized Steel
Temperature Ratings
250° Rated – Standard
350° Rated – Optional
Orientation
Available for Vertical or Horizontal Installations
22Ga Optional Sleeves
17” Sleeve – Standard
20” or 24” Lengths – Optional
Sizes
Available in Single-Section Sizes up to 36” x 48”
Available in Multi-Section Sized up to 144” x 48”
Airflow Pressure Ratings
Vertical and Horizontal = 2,000 FPM at 4” W.G. Maximum