FIG 318L, 418L, 418LC
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.
Product Features
Standard Features
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
Construction Details
- 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
Product Ordering Instructions
| Fig | Suffix | Size | Description | Gasket | Weight |
| 318L | 3800 AMC | 38” x 10” | Lightweight Manhole w/ lay-in cover, encapsulated | Yes | 125 |
| 318L | 3900 AMC | 38” x 18” | Lightweight Manhole w/ lay-in cover, encapsulated | Yes | 157 |
| 318L | 4400 AMC | 44” x 10” | Lightweight Manhole w/ lay-in cover, encapsulated | Yes | 172 |
| 318L | 4500 AMC | 44” x 18” | Lightweight Manhole w/ lay-in cover, encapsulated | Yes | 188 |
| 418L | 3800 AMC | 38” x 10” | Lightweight Manhole, bolt down cover, encapsulated | Yes | 126 |
| 418L | 4400 AMC | 44” x 10” | Lightweight Manhole, bolt down cover, encapsulated | Yes | 168 |
| 418L | 4500 AMC | 44” x 18” | Lightweight Manhole, bolt down cover, encapsulated | Yes | 188 |
| 418LC | 3800 AMC | 38” x 10” | Lightweight Manhole, cam style cover, encapsulated | Yes | 126 |
| 418LC | 3900 AMC | 38” x 18” | Lightweight Manhole, cam style cover, encapsulated | Yes | 158 |
| 418LC | 4400 AMC | 44” x 10” | Lightweight Manhole, cam style cover, encapsulated | Yes | 168 |
| 418LC | 4500 AMC | 44” x 18” | Lightweight Manhole, cam style cover, encapsulated | Yes | 188 |