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Elite's 300mm SMC Round Manhole Cover is designed for pedestrian areas, landscaped zones, utility access points and other light-duty infrastructure applications where compact dimensions, corrosion resistance, low handling weight and reduced cover movement are important.
Manufactured from glass-fiber-reinforced Sheet Molding Compound (SMC), the MR300A combines a lightweight composite structure with a molded cover-and-frame design intended to reduce the impact and metallic clatter commonly associated with loose traditional access covers.
Quick Specification: Model MR300A | A15 | 264mm clear opening | 300mm cover | 386mm frame | 3.5kg
Access-cover noise is often caused by movement between the cover and frame when pedestrians, maintenance equipment or vehicles pass over the installation. Compared with rigid metal-to-metal contact, the molded SMC composite structure can help reduce harsh impact noise and vibration during normal service.
For residential developments, parks, pedestrian zones and other noise-sensitive environments, this can provide a quieter access-cover solution than conventional loose-fitting metallic designs.
If a project requires a defined acoustic performance such as a specific decibel reduction, customers should request the corresponding test method and report for the exact product configuration before approval.
The MR300A is listed as an A15 configuration. Its compact 300mm cover diameter and 264mm clear opening make it suitable for smaller underground access points where pedestrian or other light-duty loading is specified.
The product should not be selected for heavy road traffic solely because it is described as a high-strength composite cover. Higher-load applications require a corresponding B125, C250, D400 or other verified product configuration.
Load Selection Note: MR300A is listed as A15. Confirm the installation zone and required load class before ordering; do not use an A15 cover as a substitute for a road-traffic load class.
The cover incorporates a molded textured surface designed to improve traction for pedestrians and maintenance personnel, particularly in outdoor locations exposed to rain or moisture.
Surface texture, identification markings and molded patterns can also be reviewed for customized projects.
The listed weight of the MR300A is approximately 3.5kg. Its lightweight SMC construction makes the cover easy to transport, position and remove during routine inspection or utility maintenance.
This is particularly useful for small valve, communications, landscaping and municipal access points that may require periodic manual opening.
SMC composite does not rust in the same way as conventional ferrous materials. This makes the cover suitable for outdoor infrastructure exposed to soil moisture, rainwater and changing weather conditions.
The molded composite body also reduces dependence on conventional anti-rust coatings or repeated repainting.
For coastal, chemical or other demanding environments, customers should provide the actual exposure conditions so that material suitability can be reviewed before ordering.
The non-metallic SMC structure provides electrical insulation and has low scrap-metal value compared with conventional cast iron covers.
These characteristics can be useful for electrical, telecommunications and public infrastructure applications where conductivity, corrosion or theft risk needs to be considered.
The MR300A is a compact round SMC access cover with a 264mm clear opening and 386mm overall frame diameter.
Code | Load | Clear Opening (O) | Cover Size (D) | Frame Size (F) | h | H | Weight |
|---|---|---|---|---|---|---|---|
MR300A | A15 | 264 mm | 300 mm | 386 mm | 20 mm | 35 mm | 3.5 KG |
Installation Note: The 300mm value refers to the cover diameter. The listed clear opening is 264mm and the complete frame diameter is 386mm. Confirm the chamber opening, frame support and finished surface level before installation.
The compact dimensions and A15 load class make this model most relevant to smaller utility access points located away from regular vehicle traffic.
Pedestrian walkways
Parks and landscaped areas
Residential utility access
Small drainage inspection points
Telecommunication access chambers
Electrical utility access
Irrigation and landscaping systems
Commercial pedestrian areas
Public facilities
Other light-duty underground access points
For compact access points, ease of handling and resistance to long-term outdoor exposure can be just as important as structural performance.
Project Requirement | MR300A Advantage |
|---|---|
Compact Access | 264mm clear opening with 300mm cover diameter |
Easy Handling | Listed product weight of only 3.5kg |
Noise Control | Composite cover-and-frame contact helps reduce harsh metallic impact noise |
Corrosion Resistance | SMC body does not rust like conventional ferrous material |
Electrical Environment | Non-metallic composite provides electrical insulation |
Surface Safety | Molded anti-slip texture supports outdoor pedestrian use |
Noise performance is influenced by more than the cover material itself. Cover-to-frame fit, installation accuracy, surface level, gasket or cushioning components and long-term wear can all influence whether an access cover rattles or moves during use.
For a noise-sensitive project, buyers should confirm:
Cover and frame dimensional tolerance
Whether a cushioning or sealing component is required
Frame installation and supporting surface
Expected pedestrian or vehicle loading
Required acoustic test criteria, if applicable
Procurement Tip: If a tender specifies a numerical noise-reduction value, request the corresponding acoustic test report instead of relying only on the term "noise reduction design."
Elite provides SMC composite covers in multiple dimensions and load classes and can also review customized infrastructure requirements.
Customization may include diameter, clear opening, load class, surface pattern, molded logo, color, identification markings, locking features and other project-specific details.
If a project requires B125, C250, D400 or another higher load class, the cover structure should be designed and verified for that class rather than modifying the MR300A specification only in name.
Learn more about our custom SMC molding capabilities.
Elite New Materials specializes in SMC and BMC composite molding for infrastructure and engineering applications. Its production process uses compression molding equipment and dedicated molds to control product dimensions and molded structure.
For small round access covers, key quality points include cover diameter, clear opening, frame fit, molded surface condition and load-related performance.
For projects requiring EN124 or another standard, customers should request technical documentation that corresponds to the exact model and load-class configuration being purchased.
View more information about quality inspection and technical support.
Elite supports standard and customized SMC manhole-cover orders for international infrastructure projects.
For export orders, packaging and loading arrangements can be planned according to product size, order quantity and transportation method. Customers should provide the destination country or port and target delivery schedule during the quotation stage.
The non-metallic composite structure can also be considered for infrastructure projects involving underground sensors, identification modules or communication equipment.
Sensor compatibility, wireless communication and monitoring performance depend on the selected hardware and complete system design, so these requirements should be evaluated separately from the basic MR300A manhole-cover specification.
Elite continues to develop SMC and BMC composite products for infrastructure applications where corrosion resistance and reduced corrosion-related maintenance can contribute to longer-term use.
The company also participates in community and social-service activities as part of its broader corporate responsibility efforts.
Required cover diameter and clear opening
Required A15 or other load class
Installation location and expected loading
Chamber and frame dimensions
Noise-reduction requirements, if specified
Anti-slip or surface-pattern requirements
Locking or sealing requirements
Color, logo or utility identification
Required quantity
Required EN124 or other technical documentation
Destination country or port
Target delivery schedule
The MR300A has a listed clear opening of 264mm. The cover diameter is 300mm and the complete frame diameter is 386mm.
MR300A is listed as A15. It is intended for installation environments where an A15-class cover is appropriate rather than regular heavy road traffic.
The composite material and controlled cover-to-frame fit help reduce the hard metallic impact and rattling associated with some conventional metal covers. Actual acoustic performance also depends on installation quality, fit and operating conditions.
Yes. Its A15 configuration, compact dimensions, low weight and anti-slip molded surface make it particularly relevant to pedestrian and other light-duty access environments where the project specification allows A15.
The current MR300A specification is A15. A D400 application requires a different verified load-bearing configuration. Customers should provide the required load class so that Elite can recommend an appropriate model.
SMC does not rust like conventional ferrous materials and is suitable for many outdoor and humid infrastructure environments. Specific chemical exposure should still be reviewed separately.
Yes. Depending on engineering feasibility, Elite can review different dimensions, load classes, colors, molded logos, surface patterns and other project-specific requirements.
Documentation availability depends on the exact model, load class and required standard. Customers should identify the required approval documents during the RFQ stage so that the applicable records can be confirmed before ordering.
Whether you require the standard MR300A for a pedestrian or utility access point or another customized round composite cover, Elite can review your dimensions, load requirement, noise-control needs, quantity and project documentation before quotation.
Contact Elite New Materials for a quotation or explore more SMC composite manhole covers.
