Monitoring Well Manholes & Vaults

Monitoring Well Manholes & Vaults

ECT Manufacturing provides a comprehensive selection of high-performance monitoring well manholes and protective vaults designed to meet the rigorous demands of environmental drilling, groundwater monitoring, and site remediation. Whether your project requires flush-mount manholes for high-traffic areas or specialized bolt-down monitoring well covers for water-tight security, our inventory includes industry-standard materials such as cast aluminum, heavy-duty steel, and non-corrosive all-plastic options. Our manholes are engineered to protect critical well infrastructure from surface contaminants and physical damage, featuring the recognizable monitoring well triangle symbol for easy field identification.



For projects with specific structural requirements, we offer a variety of load-rated solutions, including AASHTO HS-20 aircraft-rated manholes capable of withstanding heavy vehicular traffic in industrial settings. From compact 2" x 6" aluminum manholes to large-diameter 12" steel vaults, each unit is designed for durability and ease of installation. By integrating features like skirted manhole bases for secure concrete anchoring and stainless steel hardware to prevent seizing, ECT Manufacturing ensures your groundwater monitoring wells remain accessible and protected for the long term. Browse our full range of well protection supplies to find the exact dimensions and material specifications required for your regulatory compliance and site safety needs.

31 Items

  • 8" x 8" Plastic Skirt Manhole

    ECT Manufacturing

    8" x 8" Plastic Skirt Manhole

    ECT Manufacturing's Monitoring Well Manholes incorporate cast-in identification triangles in accordance with API recommendations and meet AASHTO H20 wheel loading. ECT's 8" x 8" Black Ductile Iron Lid & Ring with High Density Polyethylene Plastic...

    $35.00 - $44.50
    $35.00 - $44.50
  • 8" x 8" Steel Skirt Manhole

    ECT Manufacturing

    8" x 8" Steel Skirt Manhole

    ECT Mfg's Monitoring Well Manholes incorporate cast-in identification triangles in accordance with API recommendations and meet AASHTO H20 wheel loading. Skirts are available in High Density Polyethylene (HDPE) plastic or Galvanized sheet metal. Plastic...

    $22.00 - $44.50
    $22.00 - $44.50
    $22.00 - $44.50
  • 8" x 12" Plastic Skirt Manhole

    ECT Manufacturing

    8" x 12" Plastic Skirt Manhole

    Epoxy Coated Ductile Iron Lid & Ring, Bolt-Down, HDPE skirt SpecificationsMax Diameter: 10″Clear Hole ID: 6.0″Overall Height: 13″Traffic Rating: AASHTO H-20/HS-20Wheel Load Capacity: 16,000 lb

    $46.00 - $46.50
    $46.00 - $46.50
  • 8" x 12" Steel Skirt Manhole

    ECT Manufacturing

    8" x 12" Steel Skirt Manhole

    Epoxy Coated Ductile Iron Lid & Ring, Bolt-Down, Steel skirt SpecificationsMax Diameter: 10″Clear Hole ID: 6.0″Overall Height: 13″Traffic Rating: AASHTO H-20/HS-20Wheel Load Capacity: 16,000 lb

    $25.00 - $46.50
    $25.00 - $46.50
  • 12" Cast Iron Lid w/ Steel Skirt Manhole

    ECT Manufacturing

    12" Manhole - Cast Iron Lid w/ Steel Skirt

    Epoxy Coated Ductile Iron Lid & Ring, Bolt-Down, Steel skirt, Two stainless steel bolts SpecificationsOuter Diameter: 14″Clear Hole ID: 9.4″Skirt Length: 12" or 8"Rating: AASHTO H-20 / HS-20Wheel Load Capacity: 16,000 lbs Meets the...

    $106.60 - $136.00
    $106.60 - $136.00
  • Welded Steel Pipe Skirt XD Manholes Online

    ECT Manufacturing

    Welded Steel Pipe Skirt XD Manhole

    Extreme Duty Manhole. Epoxy Coated Ductile Iron Lid & Ring with Heavy Duty Pipe Skirt Welded to Ring. 8" x 12" SpecificationsOuter Diameter: 10″Overall Height: 13″Clear Hole ID: 6″Skirt: .1875" Wall Steel PipeTraffic Rating: AASHTO...

    $99.66 - $125.30
    $99.66 - $125.30
    $99.66 - $125.30
  • 18" Cast Iron Lid w/ Steel Skirt Manhole

    ECT Manufacturing

    18" Manhole - Cast Iron Lid w/ Steel Skirt

    Ductile Iron Lid & Ring, Bolt-Down, Water-Resistant, Built-in HandleThree stainless steel boltsGalvanized steel skirtAPI 615 equilateral triangle cast into cover SpecificationsOuter Diameter: 18.4″Clear Hole ID: 13.8″Rating: AASHTO...

    $222.16 - $226.90
    $222.16 - $226.90
  • Morrison Bros. 519 Series Manhole

    Morrison Bros. Co.

    Morrison Bros. 519 Series Manhole

    Morrison Brand, Model 519: Premium grade monitoring well manhole. Fully watertight, one-piece cast iron ring and skirt. Permanent black triangle on white warning decal with a brass well plate for tamping well number. Buna-N seal (replaceable). Stainless...

    $338.16 - $527.97
    $338.16 - $527.97
    $338.16 - $527.97
  • Aircraft Rated Cast Aluminum Manhole

    ECT Manufacturing

    Aircraft Rated Cast Aluminum Manhole

    Aircraft Rated

    Heavy Duty Cast Aluminum Aircraft Rated Manhole, Bolt-Down, Water-Tight SpecificationsMax Diameter: 10-3/4″Overall Height: 12″Load Capacity: 258,000 lbsThree stainless steel boltsOne-piece cast construction Meets the following load...

    $419.00
    $419.00

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