Add this Ruck Air Movement Back Draught Damper to your duct installation, as it can be installed either horizontally or vertically to fit your needs. With a galvanized sheet steel housing, the inner spring-loaded aluminum flaps move with your airflow when air is extracted–otherwise, it’s closed off thanks to a rubber seal.

Available Ruck Air Movement Back Draught Damper Options

4-in (149389)

• Dimensions: 4” x 3.5”
• Weight: 0.5 lbs
• Compatibility: Ruck Air Movement 147806 / 147815 Fans

6-in (149391)

• Dimensions: 6” x 3.5”
• Weight: 0.7 lbs
• Compatibility: Ruck Air Movement 147833 / 147842 / 147473 / 147608 / 147626 / 147617 / 147635 Fans

8-in (149394)

• Dimensions: 8” x 3.5”
• Weight: 0.9 lbs
• Compatibility: Ruck Air Movement 147860 / 147869 / 147482 / 147590 / 147644 / 147662 / 147653 / 147671 Fans

10-in (149396)

• Dimensions: 10” x 5.1”
• Weight: 2.0 lbs
• Compatibility: Ruck Air Movement 147887 / 147896 / 147491 / 147680 / 147500 / 147689 / 147707 Fans

12-in (149477)

• Dimensions: 12” x 5.1”
• Weight: 2.4 lbs
• Compatibility: Ruck Air Movement 147509 / 147518 / 147716 / 147725 Fans

14-in (149400)

• Dimensions: 14” x 7.9”
• Weight: 4.2 lbs
• Compatibility: Ruck Air Movement 147527 / 147536 / 147734 / 147743 / 147752 / 147761 Fans 

16-in (149445)

• Dimensions: 16” x 7.9”
• Weight: 4.9 lbs
• Compatibility: Ruck Air Movement 147545 / 147770 / 147779 Fans