Series 20 Smoke Dampers Class I

Series 20 Smoke Dampers Class I

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UL Classified UL 555S

Meets NFPA Standard 90A ICC Building Codes

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