NDS 1216 Catch Basin Riser – 6-Inch Height for 12-Inch Square Basin, Black

Overview

The NDS 1216 Catch Basin Riser adds up to six inches of height to a standard 12-inch square catch basin, enabling surface water to be captured before it pools near your lawn, patio, or walkway. Made from UV-stabilized polystyrene, this riser resists fading and cracking over time and can be cut to size with a saw to fit your project. It is designed to work with a 12-inch catch basin and can accommodate a 12-inch drain grate on top. The load rating depends on the grate you select, so check your grate choice as you plan the installation.

Key benefits

• Adds up to six inches of height to reach surface water effectively
• Versatile placement around lawns, landscaped areas, downspouts, patios, and walkways
• Easy installation: stacks neatly on a 12-inch catch basin and accepts a 12-inch grate on top
• Reduces the need for regrading or awkward piping during setup
• Durable, UV-stabilized polystyrene to resist fading and cracking over time

How it fits into a drainage system

As part of a complete drainage solution, the catch basin collects runoff and directs it toward discharge points downstream or into infiltration features such as dry wells or trenches. This riser helps you elevate the catch basin to better intercept surface water before it reaches sensitive areas.

Practical use scenarios

• Capture water rising from driveways, patios, and walkways for safer, drier surfaces
• Channel surface water away from gardens, lawns, and edging to protect landscape beds
• Works well under downspouts to keep foundation zones drier
• Allows straightforward retrofitting of existing drainage networks

For planning assistance, NDS provides helpful resources such as the Home Drainage Center, design calculators, and the Stormwater Drainage mobile app. Since 1972, NDS has supported professionals with proven drainage solutions, offering guidance and tools to help you arrive at solid, site-appropriate results. The 1216 riser ships in classic black and is compatible with the 12-inch components that form a complete, flexible drainage system.

Material and durability

Constructed from UV-inhibited polystyrene, the riser maintains its shape and color under sun exposure while offering lightweight handling and simple modification with a common saw. When used with an appropriate grate and piping, it contributes to a stable, reliable drainage extension for surface water management.

Dimensions and compatibility

The six-inch height integrates with a standard 12-inch catch basin, and the system accepts a 12-inch drain grate on top. Load ratings vary by grate type, so select the grate that matches your performance needs and local conditions.