SpecificationsShipping Weight: 30 lbs. each Standard FeaturesMade in the U.S.A.Clear Adjustable GlidesLaborsaver FeatureStandard Powdercoat Colors Warranty1-Year Structural Warranty Options/Upgrades3 inch column4 inch Column - Center Bolt AssemblyChrome ColumnCustom HeightsSatin Chrome ColumnSuperlevel ® self-leveling glides