The Space 18” Basin offers a totally unique bell-shaped design capable of holding three sump pumps. The modular, twist & lock design allows for basin assembly in tight crawl spaces and is capable of fitting through most any crawl space access door. This basin is topped off with a two-piece clear lid for convenient inspection and access. The lid comes pre-installed with a Dranjer drain, sealed cord pass-throughs, and discharge line grommets. A gasket is used to seal the basin and protect against water vapor, odors, and radon gas.