Composite Access Products manufactures round composite manhole covers in 24”, 30”, and 36” sizes for shipment nationwide. Every cover is molded in the United States, built to meet H-25 traffic rating standards, and designed for long-term performance. With lighter weight, corrosion resistance, and safety benefits, CAP covers give municipalities and contractors a dependable alternative to iron, without tariffs or supply chain risks.
We will be in touch shortly and look forward to talking with you.
CAP manufactures round composite manhole covers only. Available sizes:
The CAP ONE-24 has a 24″ clear opening and is made with either bolts or quarter-turn paddle locks. Custom logos are available in the top arch, center circle, or bottom arch.
The CAP ONE® has a 30″ clear opening and is our standard assembly for all cover markets: water, wastewater, electric, broadband, etc.
The CAP ONE-36 has a 36″ clear opening and was introduced in Spring 2022. Made in the USA, it is more robust than other options on the market and offers many features and logo locations.
Each size is built to meet H-25 traffic rating standards and is engineered for long-term reliability.
CAP covers are more than an alternative to iron. They are also designed to meet
the highest standards of safety and performance.
Domestic manufacturing allows for consistent quality and dependable supply with no tariffs or overseas delays.
Recognized by the Texas Department of Transportation for meeting strict, state-level safety and performance standards.
Built to AASHTO M 306 standards and certified for highway traffic, giving municipalities confidence in heavy-use conditions.
Resists rust, salt, and chemical exposure.
Seals tight to block inflow and lower treatment costs.
Up to 70% lighter than iron, reducing strain and speeding installation.
Transmission requires antennae holes in traditional covers. Signals pass through CAP™s from underneath.
Composite covers reduce heat transfer, prevent burns, and provide natural electrical insulation against stray voltage.
CAP covers are trusted in large-scale government projects, corporate developments, and major construction jobs. Whether you’re specifying city infrastructure, utilities, or industrial projects, CAP delivers covers that are safe, reliable, and made to last.
Thicker bases lower the center of gravity so covers sit deeper and more securely.
Less than one-eighth inch deflection at 50,000 pounds prevents the trampoline effect.
I-beam ribbing prevents distortion during curing, keeping surfaces flat and stable.
Bolts with fifteen full threads stay tight through years of vibration and traffic stress.
Request specs or a quote today for 24”, 30”, or 36” round composite manhole covers.