Nds 1200dsg Downspout Catch Basin Drainage Grate 12x12

Product Description

The NDS 1200dsg is a rectangular drainage grate designed to sit over 12-inch catch basins installed beneath residential and commercial downspouts. Built from black polyolefin, this grate captures stormwater runoff while deflecting leaves, debris, and sediment that would otherwise clog the drainage system. With a maximum flow rate of 9,300 gallons per hour, the 1200dsg handles high-volume storm events without backing up. It measures 11.79 inches in length by 9 inches in width with an actual depth of 12.14 inches. Landscape and drainage contractors install this grate as part of a complete downspout drainage solution to direct water away from foundations, slabs, and landscaping.

This grate is suited for stormwater management applications at building downspout terminations in both residential and light commercial settings. Typical installs place a catch basin directly below a downspout, using the grate to intercept sheet flow and channeled water before it enters a subsurface pipe network. It is compatible with the NDS 12-inch catch basin product family, including basin kits and risers. The 1200dsg is sized for use with NDS 1200BKIT and 1200GKIT, making it a direct-fit component within those assemblies.

Key Features

• Maximum flow rate of 9,300 gallons per hour for high-volume stormwater events
• Polyolefin construction resists UV degradation and chemical exposure in outdoor drainage environments
• Rectangular profile at 11.79 x 9 inches fits flush over NDS 12-inch catch basins
• Debris-deflecting grate design keeps the basin and downstream pipe clear
• Lightweight at 1 pound for easy single-technician handling and swap-out
• Black finish blends with standard catch basin housings and asphalt or soil surrounds

Compatibility

Fits all NDS 12-inch catch basins, basin kits, and risers, including NDS 1200BKIT and 1200GKIT. Connection size is 12 x 12 inches.

Installation Notes

Drainage and landscape contractors typically install catch basin grates after setting the basin housing to final grade. Ensure the basin is fully seated and level before seating the grate so surface water drains toward the opening rather than pooling at the rim. Local stormwater codes may govern placement relative to structures and impervious surfaces — consult the applicable municipal drainage ordinance before finalizing location. No special tools are required to seat or remove the grate for routine cleaning and inspection.

Technical Specifications

• Actual Length: 11.79 inches
• Actual Width: 9 inches
• Actual Depth: 12.14 inches
• Connection Size: 12 x 12 inches
• Maximum Flow Rate: 9,300 gallons per hour
• Material: Polyolefin
• Color: Black
• Shape: Rectangular
• Weight: 1 pound

Standard Information

• Brand: NDS
• Manufacturer Part Number: 1200dsg