NDS Square Grates

Square grates play a critical role in managing surface water by allowing it to flow freely into catch basins while preventing debris from clogging the system. Their robust design reduces the risk of standing water, erosion, and flooding across driveways, patios, lawns, and other landscaped areas. Choose Maxx Drains for expert service, a wide range of in-stock sizes, and trusted support from NDS project specialists.

Key Features & Material Options

NDS square grates are available in UV-stabilized plastic, cast iron, and brass to match various project needs. These materials resist rust, chemicals, and UV damage for dependable outdoor performance.

• Slip-resistant textures help reduce fall risks in wet conditions.


• Grates are offered in Class A through D load ratings to support everything from pedestrian walkways to light vehicle traffic.


• Both functional and decorative styles are available to meet technical and aesthetic requirements.

These drain covers are an excellent choice for integrating beauty and utility in a square drain grate solution.

Sizes & Compatibility

Choose from common sizes like 6”, 9”, 12”, and 18” square grates, each designed to fit directly into matching NDS catch basins. Universal-fit models provide flexibility across varying configurations.

Popular options include:

• 9” x 9” Polyolefin Grate – Green


• 12” Cast Iron Grate – Black

These grates are precision-fit to maintain proper alignment and hydraulic performance with your connected drain pipe or catch basin.

Application Scenarios

NDS square drainage grates are ideal for residential patios, driveways, downspouts, courtyards, pool decks, parking areas, and small lawns. They also support trench drain systems in light commercial projects requiring higher load-bearing grates.

• Decorative models add visual appeal without sacrificing flow rates.


• Heavy-duty options handle traffic-rated installations where safety and strength are critical.

From managing runoff around your home drainage center to installing a drain grate in a more complex system, NDS offers solutions that blend utility with design.

Why Buy From Maxx Drains?

• Full selection of NDS parts and accessories


• Trusted by professionals across the U.S.


• Fast shipping and knowledgeable customer support


• Competitive pricing and bulk order options


• Ongoing product support and installation guidance

Whether you're optimizing your patio, reinforcing a high-traffic zone, or solving a slope runoff issue, Maxx Drains has the square drain grate for your job.