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Composite Manhole Cover, Round 39"x10", Cam-Lock Steel skirt
The EMCO Wheaton A0716-039C is a 39" round manhole with a black composite (UV-resistant, fiber-reinforced) lid and hot rolled steel skirt. The cam-lock lid uses a cam-lock mechanism with ribbed...
$ 1,141.58
Composite Manhole Cover, Round 42" x 19", Lay-In Lid
The EMCO Wheaton A0716-042A is a 42" round manhole with a black composite (UV-resistant, fiber-reinforced) lid and hot rolled steel skirt. The lay-in lid drops into the frame without bolts...
$ 1,407.81
Square Manhole Cover, Vault 36"x36"x24" Hinged Locking Lid
The EMCO Wheaton A0717-736VWE is a 36" square manhole/vault with a 3/8" heavy-duty diamond plate steel lid and 16-gauge steel body. The locking vault design features a hinged lid with...
$ 1,531.17
Steel Manhole Cover, Round 24" x 19",3/8" Cam-Lock Steel Lid
The EMCO Wheaton A0717-024CDA is a 24" round manhole with a 3/8" diamond plate steel lid and hot rolled steel skirt. The cam-lock w/d-seal lid uses a cam-lock mechanism with...
$ 1,156.53
Steel Manhole Cover, Round 30" x 13" Steel Cam-Lock Lid
The EMCO Wheaton A0717-030CD is a 30" round manhole with a 3/8" diamond plate steel lid and hot rolled steel skirt. The cam-lock w/d-seal lid uses a cam-lock mechanism with...
$ 1,366.81
Steel Manhole Cover, Round 48" x 13", 1/2" Steel Lay-In Lid
The EMCO Wheaton A0717-048 is a 48" round manhole with a 1/2" diamond plate steel lid and hot rolled steel skirt. The lay-in lid drops into the frame without bolts...
$ 2,523.36
Steel Manhole Cover, Round 36" x 13", Steel Bolt-down Lid
The EMCO Wheaton A0717-136B is a 36" round manhole with a 3/8" diamond plate steel lid and hot rolled steel skirt. The bolt-down lid secures with bolts and a ribbed...
$ 1,314.26
Steel Manhole Cover, Round 36"x 13", Lay-In, 1/2" Steel Lid
The EMCO Wheaton A0717-036 is a 36" round manhole with a 1/2" diamond plate steel lid and hot rolled steel skirt. The lay-in lid drops into the frame without bolts...
$ 1,471.97
Monitoring Manhole Cover, Round 12" x 8", White Ductile Lid
The EMCO Wheaton A0721-128 is a low-profile 12" monitoring well manhole with just 8.1" overall height. White ductile iron bolt-down lid, polyethylene skirt. The shortest 12" model available — ideal...
$ 145.01
Monitoring Manhole Cover, 12"x12 White Ductile Lid
The EMCO Wheaton A0721-101ID is a 12" monitoring well manhole identical to the A0721-101, with a factory-installed ID tag for well tracking and regulatory compliance. White ductile iron bolt-down lid,...
$ 196.30
Monitoring Manhole Covers, Round 12" x 12", Lay-In
The EMCO Wheaton A0721-101L is a 12" monitoring well manhole with a lay-in lid and galvanized steel skirt. No bolts needed for routine well access — the ductile iron lid...
$ 145.01
Square Manhole Cover, Vault 18" x 18" x 24", Hinged, Locking
The EMCO Wheaton A0717-718VWA is a 18" square manhole/vault with a 3/8" heavy-duty diamond plate steel lid and 16-gauge steel body. The locking vault design features a hinged lid with...
$ 663.51Choosing the Right Manhole Cover
The cover and frame you need depends on three things: what’s going over it (foot traffic, vehicles, heavy equipment), what environment it’s in (roadway, coastal, chemical facility), and what access dimensions the opening requires.
Material
Cast iron — The industry standard for load-bearing applications. Handles vehicle traffic, resists settling, and lasts decades. Choose cast iron for roadway installations, parking areas, and any location with vehicle exposure.
Composite — UV-stable, corrosion-resistant, and significantly lighter than cast iron. The right choice for coastal environments, chemical facilities, and sites where corrosion would destroy a metal cover over time. Won’t rust, won’t degrade in sunlight.
Steel skirt — Heavy-gauge steel frame for maximum structural rigidity. Used where the frame needs to anchor into concrete or asphalt under traffic loads.
Configuration
- Lay-in lid — Drops into the frame flush. Easy to remove for access, standard for most installations.
- Bolt-down lid — Secured with bolts for tamper resistance. Required for secured facilities and high-traffic locations.
- Cam-lock — Quarter-turn locking mechanism on composite covers. Faster than bolts, more secure than lay-in.
Common Sizing
Round covers from 6” to 44” diameter. Square covers from 18” to 36”. Frame depths from 5” to 24”. If you’re replacing an existing cover, measure the opening diameter and frame depth before ordering. Not sure? Call us at (866) 514-3684 — we help contractors and engineers spec covers every day.
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FAQ
Why are manhole covers round?
A round cover can’t fall through its own opening — the diameter is constant in every direction. A square cover, turned diagonally, could drop through. Round is inherently safer for any opening that workers or the public walk near.
How do I measure for a replacement manhole cover?
Measure the inside diameter of the existing frame (the opening the lid sits in), and the frame depth. Order a cover that matches both dimensions. If you’re unsure, call us with the measurements and we’ll confirm the right product.
Cast iron or composite — which should I use?
Cast iron for load-bearing and vehicle-traffic locations. Composite for environments where corrosion, UV, or chemical exposure would degrade metal — coastal sites, chemical plants, and industrial facilities.
Do you carry bolt-down manhole covers?
Yes. We carry bolt-down lid configurations in cast iron for applications requiring tamper-resistant, secured access.
