Quick view Round Damper Blade with Hardware Blade Manufactured from 24 ga G60 Galvanized Steel Damper Blades 12" diameter and up are stiffened Includes: 2 retractable Spring Bearings, Stamped Galv Steel Washer and Handle and Die Cast Wing Nut for added strength and reliability Add dampered... MSRP: Was: Now: $5.79 - $19.55 Choose Options