Manhole Protection Ring (MPR)

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MPR 75 • 19.5” Inside opening dimension • Designed to fit 20” manhole openings • Will reasonably accommodate up to a 24” opening MPR 100 • The MPR 100 is the industry standard. 21. 5” Inside opening dimension • Designed to fit the industry standard 24” manhole opening • Will reasonably accommodate up to a 26” opening MPR 125 • 29” Inside opening dimension • Designed to fit 30” manhole openings • Will reasonably accommodate up to a 36” opening Show more