18” x 18” Heavy Duty Catch Basin Frame & Grate with Square Holes – Class C Cast Iron

The 18” x 18” Heavy Duty Catch Basin Frame & Grate with Square Holes is engineered for efficient stormwater collection and dependable drainage performance in municipal infrastructure, commercial developments, transportation facilities, and industrial environments. Manufactured from heavy-duty cast iron and designed for Class C loading applications, this drainage assembly delivers long-term durability, structural integrity, and reliable runoff management in demanding service conditions.

Featuring a square hole grate pattern, this catch basin assembly is designed to provide efficient surface water intake while supporting consistent hydraulic performance throughout the drainage system. The open-grid square hole configuration promotes effective runoff interception and drainage flow, making it a practical solution for projects where stormwater management, infrastructure protection, and long-term performance are essential.

Commonly specified by municipalities, civil engineers, contractors, developers, and public works agencies, this cast iron drainage assembly is built to withstand environmental exposure, repeated loading, and the operational demands associated with modern stormwater infrastructure systems.

Features & Benefits

• Heavy-duty cast iron construction for exceptional strength and longevity
• Square hole grate pattern engineered for efficient stormwater collection
• Class C rated for municipal and commercial drainage applications
• Open-grid design promotes consistent runoff intake and drainage flow
• Precision-cast frame and grate assembly for secure seating and stability
• Excellent resistance to wear, impact, and environmental conditions
• Suitable for streets, parking lots, utility corridors, and public infrastructure
• Available with custom logos, utility markings, and municipal identifiers

Applications

This 18” x 18” heavy duty catch basin frame and grate assembly is commonly utilized in:

• Municipal stormwater collection systems
• Commercial drainage infrastructure
• Roadway runoff management
• Parking lot drainage applications
• Utility and service corridor projects
• Industrial site drainage systems
• Public works construction projects
• Surface water conveyance networks

Product Specifications

Designed for Efficient Stormwater Interception

Effective drainage systems rely on components capable of rapidly capturing runoff while maintaining dependable structural performance. The square hole grate configuration is engineered to provide efficient water intake and support the movement of stormwater into underground drainage networks, helping reduce standing water and improve overall site drainage efficiency.

Combined with the durability of cast iron construction, this heavy-duty catch basin frame and grate delivers reliable performance for infrastructure projects requiring long service life, consistent drainage capacity, and proven field durability.

Frequently Asked Questions

Why choose a square hole catch basin grate?

Square hole grate designs provide efficient runoff collection, dependable drainage performance, and a durable open-grid structure suitable for a wide range of municipal and commercial applications.

Where are heavy duty catch basin grates with square holes commonly installed?

These drainage assemblies are frequently specified for municipal streets, parking facilities, commercial developments, industrial properties, utility corridors, and public infrastructure projects.

What advantages does cast iron offer for drainage infrastructure?

Cast iron provides superior durability, structural stability, wear resistance, and long-term performance in demanding environments exposed to traffic and weather conditions.

What does a Class C drainage rating indicate?

Class C drainage products are designed for municipal and commercial infrastructure applications requiring reliable load-bearing performance and dependable stormwater management capabilities.

Are custom casting options available?

Yes. Amercast may provide custom logos, utility designations, municipal markings, and project-specific casting modifications depending on project requirements.

Amercast manufactures specification-ready cast iron drainage products for municipalities, engineers, contractors, developers, and public works professionals seeking durable stormwater management solutions and long-lasting infrastructure components.

Contact our team for pricing, lead times, and custom casting opportunities.

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