Corbin Dorma Dorma-Taco Doromatic Jackson Kawneer LCN Lockwood Norton R&K Rixson Roto-Swing Russwin Sargent Tubelite
Jackson
Model 20-330
Non handedDouble actingExtera Light Duty, Heavy Duty, and Adjustable spring sizesIdentified by # on shaftHold Open (HO) or No Hold Open (NHO) - 90 or 105 degreeSquare shaftDual valveclick images to enlarge
Model 20-330 DUMMY PIVOT
Available in all Jackson model configurationsNon handedNo spring power - Pivot only
