When Experience Matters!


Morrison Bros 418XAH Manhole with Heavy Skirt


Standard Features

Large clean-out surface around the bolts

Locating tab for ease of bolt alignment

 “Monitoring Well” cast into cover

 Easy to replace gaskets without tools or glue (7″, 9″, and 12″)

 API 615 equilateral triangle cast into cover


Construction Details

  • Bolts: Stainless hex head
  • Gasket: Buna-N
  • Cover: Cast iron
  • Ring: Cast iron
  • Skirt: 14 gauge continuously welded
  • Nylon washers

Certifications & Listings

Meets H-20 load requirements

418XAH0300 AM9″ x 12″Monitoring Well-Limited Access Manhole-Heavy Skirt22
Weight 22 lbs
Dimensions 9 × 9 × 12 in