The NDS 12 in. x 12 in. Catch Basin 2-Opening Kit features UV-resistant 1-piece injection-molded structural polypropylene construction for strength. Includes 1 catch basin, 1 grate, 2 outlets, and 1 plug (2 open sides). Black. Dimension(s): 12-3/8" L x 12-3/8" W x 12-15/16" H. Part of NDS 12" Catch Basin Series. 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.