Encapsulated Lightweight Manhole w/ Lay-in Cover
One Year Manufacturer Warranty

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Morrison Brothers 318L--4500 AMC Encapsulated Lightweight Manhole w/ Lay-in Cover

44in. x 18in.

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Model # Description Price Qty
318L--4500 AMC 44in. x 18in. $1,411.47
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Morrison Bros. Co. 318L Series Encapsulated Lightweight Manhole

Our lightweight manholes are encapsulated in a new high performance material. The Morrison engineered laminate has been encapsulated with long life, tougher than a bedliner, polyurea elastomer, built for moisture protection and chemical resistance.

  • High strength elastic protective coating... 3X stronger than standard truck bed liner!
  • Meets H-20 load rating
  • Exceptional barrier against moisture and chemicals
  • Strong surface adhesion characteristics--won't peel or separate
  • Slip-resistant surface
  • Extended service life
  • Handle/lift-lug combination: stainless steel
  • Pry plate: stainless steel
  • Ring set: 3/16" steel angle iron
  • Skirt: 12 gauge steel
  • Cam assemblies: Nylon and stainless steel
  • Gasket: Polyisoprene rubber

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