OSHA Danger Flanged Pipe Barrier Kit: Confined Space - Authorized Personnel OnlyClearly mark and secure confined space entries with the OSHA Danger Flanged Pipe Barrier Kit to restrict access to authorized personnel only. Key Features: Options to fit pipe diameters of 18" through 28" U shaped flange ends hook directly onto pipe flange, no bolting required Adjustable cross arms accommodate a range of hatch openings Center post accepts a padlock or lockout hasp Red and white striped aluminum cross arms with bold OSHA danger