The NDS 9 x 9 in Catch Basin 2-Opening Kit features UV-resistant 1-piece injection-molded structural polypropylene construction for strength. Use in areas where water buildup occurs. Use to catch and divert water to water safe areas away from structures, erosion-prone landscapes and poor drainage areas. UV-resistant 1-piece injection-molded structural foam polyolefin for strength. For many residential and commercial applications Collects excess surface water from lawn, landscape, residential driveways and garages. Suitable for light vehicular traffic when properly installed, suitable for both landscape and hardscape applications and able to withstand normal abuse in landscaping applications. 5 psi maximum working pressure, fade resistant, rust resistant, lightweight, sump area collects debris and helps prevent clogged pipes. Each pack includes one basin, one grate, two outlets and one plug. Easy to install polypropylene basin/styrene adaptors.