- 8" Adjustable Butterfly Damper, RoundBrand: Hart & CooleyPart number: 3808 GSSKU: 92720Your Price $7.28 List Price $15.84
- 6" Adjustable Butterfly DamperBrand: Hart & CooleyPart number: 3806 GSSKU: 118775Your Price $12.28 List Price $17.70
- 8" Adjustable Butterfly Damper, Round, BrownBrand: Hart & CooleyPart number: 12 08 GSSKU: 113428$30.40
- 6" Adjustable Butterfly Damper, Round, BrownBrand: Hart & CooleyPart number: 12 06 GSSKU: 113427$29.95