NDS 1212 Square Catch Basin Drain Grate – Diamond Design, 12-Inch, HDPE, ADA Compliant, 162 GPM

Overview

Meet the NDS 1212 Square Catch Basin Drain Grate—a durable, UV-stabilized HDPE cover designed to sit on top of a 12-inch catch basin, riser, or low-profile adapter. It acts as a protective barrier, helping to keep leaves, dirt, and debris out of your drainage pipes while stormwater flows away from patios, walkways, and landscaped areas.

Why this grate stands out

Strategically placed openings on the 53.1 sq in open surface provide a robust 162 GPM flow capacity, supporting steady drainage during heavy rain. When properly installed, it carries the NDS Class B load rating (up to 175 psi) and is ADA compliant, making it suitable for a variety of outdoor settings.

Key benefits

• BLOCKS LEAVES & DEBRIS: Protects your drainage system by preventing particles from entering and potentially clogging the pipeline while letting excess surface water flow.
• HOW TO USE: Drains heavy flows of stormwater from lawns, landscaped areas, patios, walkways, and under downspouts into a capture device connected to drain pipes to carry the water downstream to a discharge point such as a pop-up emitter.
• HOW TO INSTALL: Place the storm drain grate on top of a capture device such as the 12 in. catch basin, riser, or low-profile adapter to drain surface water.
• DESIGN FEATURES: Made of high-density polyethylene (HDPE) treated with UV inhibitors to prevent fading and cracking; available in a variety of colors, styles, and materials.
• SPECIFICATIONS: 53.1 sq in open surface area; 162 GPM; rated for NDS Class B loads (up to 175 psi) when properly installed; ADA compliant.

Materials & durability

Constructed from UV-stabilized HDPE, this grate resists cracking and fading in sunlight, helping maintain its look and function over time. Its 12-inch footprint aligns with standard catch basins and accessories, offering a reliable fit for a wide range of drainage projects.

Practical use cases

Ideal for managing runoff from lawns, landscaped beds, and areas adjacent to patios or walkways. It helps channel water toward a downstream discharge point or percolate into the ground through a dry well or infiltration trench, depending on your drainage plan.