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Monitoring Manhole Cover, Round 12"x 12" long metal skirt
The Martin Products MWL1212SM is a 12" monitoring well manhole cover with a long galvanized steel skirt. Provides traffic-rated access protection for groundwater monitoring wells. The extended skirt height accommodates...
$ 183.00
Monitoring Manhole Covers, Round 12" x 12" Ductile Lay-In
The EMCO Wheaton A0721-001L is a 12" monitoring well manhole with a lay-in (drop-in) lid for tool-free access during routine sampling. Black ductile iron lid, polyethylene skirt. The larger 11.2"...
$ 129.40
Monitoring Manhole Cover, Round 12"x8", Bolt-down Lid
The EMCO Wheaton A0721-128A is a low-profile 12" monitoring well manhole with galvanized steel skirt and 8.0" overall height. White ductile iron bolt-down lid. Choose the -128A over the -128...
$ 149.47
Monitoring Manhole Cover, Round 6" x 9.5", Ductile Lid
The EMCO Wheaton A0721-106A is the extended-height version of the 6" monitoring well manhole, standing 9.5" tall compared to the standard 7.5". Same ductile iron bolt-down lid and steel skirt...
$ 58.00
Monitoring Manhole Cover, Round 8" x 8", Black Ductile Lid
The EMCO Wheaton A0721-188 is the short-skirt version of the 8" monitoring well manhole — 9.2" overall height versus the standard 12.7" of the A0721-108. Black ductile iron bolt-down lid...
$ 78.09
Monitoring Manhole Cover, Round 18"x18" Bolt down lid
The EMCO Wheaton A0721-118 is the extended-height 18" monitoring well manhole, standing 18.0" tall compared to the standard 12.3" A0721-018. Black ductile iron bolt-down lid with built-in side handle, galvanized...
$ 363.65
Monitoring Manhole Covers,12"x12" Bolt down Poly skirt
The EMCO Wheaton A0721-001 is a 12" monitoring well manhole with a white painted ductile iron bolt-down lid and polyethylene skirt. The industry-standard choice for 12" monitoring well installations where...
$ 138.33
Monitoring Manhole Cover, Round 8" x 12", Large bolt down lid
The EMCO Wheaton A0721-008CE is the California-compliant version of the 8" monitoring well manhole, featuring larger bolt hardware and a white painted lid for high-visibility marking. Polyethylene skirt with ductile...
$ 72.52
Monitoring Manhole Cover, Round 18"x12" Ductile Bolt Down
The EMCO Wheaton A0721-018 is an 18" monitoring well manhole with a black painted ductile iron bolt-down lid and galvanized steel skirt. Features a built-in side handle for one-hand opening...
$ 312.31
Monitoring Manhole Cover, Round 8" x 12", Black Ductile Lid
The EMCO Wheaton A0721-108ID is an 8" monitoring well manhole identical to the A0721-108, with the addition of a factory-installed ID tag for well identification and regulatory compliance. Black ductile...
$ 97.03
Monitoring Manhole Cover, Round 8" x 12", White Ductile Lid
The EMCO Wheaton A0721-308A is the extended-height version of the 3-bolt 8" monitoring well manhole, standing 12.8" tall compared to the standard 8.8" A0721-308. White ductile iron lid, galvanized steel...
$ 90.36
Monitoring Manhole Cover, Round 12" x 19", White Ductile Lid
The EMCO Wheaton A0721-119 is the deep-skirt 12" monitoring well manhole with a 19" overall height — the tallest in the 12" line. White ductile iron bolt-down lid, galvanized steel...
$ 240.95Flush-Mount Well Access
When a monitoring well needs to be completed at grade — in a parking lot, sidewalk, or paved area — a monitoring well manhole provides the surface-level access point. The manhole frame sits flush with the surrounding surface, and the cover protects the well casing below.
These are different from standard sewer manholes. Monitoring well manholes are smaller (typically 5” to 18”), designed to accommodate well casing rather than human entry, and often require bolt-down or locking lids for regulatory compliance.
Key Considerations
- Traffic loading — Will vehicles drive over the cover? If yes, choose ductile or cast iron with appropriate load rating.
- Well casing size — The manhole opening must accommodate your well casing diameter plus any above-ground fittings (caps, plugs, sampling ports).
- Security — Bolt-down lids prevent unauthorized access and satisfy most regulatory requirements for well security.
Related Categories
- Locking Well Plugs — Seal the well casing inside the manhole
- Well Protectors — Above-ground enclosures for wells that extend above grade
- All Manholes
FAQ
What’s the difference between a monitoring well manhole and a standard manhole?
Monitoring well manholes are smaller (5”–18” vs. 12”–44”+) and designed for well casing access, not human entry. They’re used for flush-mount well completions in paved areas.
Do I need a manhole AND a well plug?
Typically yes. The manhole provides the surface-level access frame. The well plug or cap seals the actual well casing inside the manhole. They serve different functions.
