NDS 1811 - 18" Square Catch Basin Drain Grate - Black

The NDS 1811 Square Catch Basin Drain Grate is designed to efficiently collect surface water while preventing leaves, dirt, and debris from entering and clogging drainage systems. Constructed from durable, UV-resistant high-density polyethylene (HDPE), this 18" black grate provides long-lasting performance in residential and commercial drainage applications. Its slotted design allows water to flow freely into compatible catch basins, with a flow capacity of up to 264 gallons per minute. Featuring a Class B load rating and ADA-compliant openings, the NDS 1811 is ideal for lawns, landscaped areas, courtyards, patios, driveways, and other outdoor drainage installations.

Features

• 18" square catch basin drain grate with black finish
• Actual dimensions: 16-7/8" L x 16-7/8" W x 1" H
• Durable structural foam polyolefin (HDPE) construction
• UV inhibitors help prevent fading and cracking from sun exposure
• Class B load rated for medium-duty traffic applications
• ADA-compliant slotted grate design
• 264.03 GPM flow capacity at 1/2" head
• 86.31 square inches of open surface area
• 7/16" grate openings help prevent larger debris from entering drainage systems
• Designed for use with compatible NDS 18" catch basins, risers, and low-profile adapters
• Compatible with NDS 18" catch basin models 1882 and 1884
• Chemical-resistant and rustproof construction
• Lightweight alternative to traditional cast iron drainage grates
• Suitable for lawns, landscaped areas, patios, courtyards, and driveways
• Helps collect and redirect excess surface water to connected drainage systems
• Black finish blends with surrounding pavement and landscaping
• Grate only, catch basin sold separately
• Manufacturer Part Number: 1811
• Material: Structural Foam Polyolefin (HDPE)
• Color: Black

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