Shoemaker 955-30X6 Adjustable Blade Baseboard Register 30" X 6'' 955 O - Steel Opposed Blade Damper 955 O Steel Opposed Blade Damper All Component Parts, Rivets, Linkage And Handle Enclosed In Valve To Assure Trouble-Free Operation All Component Parts, Rivets, Linkage And Handle Enclosed In Valve To Assure Easy Operation