For sump applications, the SF20-DR is designed to hold a sump pump. Factory perforated with 48, 5/16 in. holes that allow for a quick reduction of standing water in crawl space areas, yards patios and driveways. It is ideal for basement applications where a submersible or pedestal sump pump is required. The single piece basin is injection molded structural foam polyethylene and provides superior structural toughness and reliability. The rim of the basin includes pre-drilled holes with metal inserts to accept the mounting and securing of a cover. The ultra-strong reinforced bottom will not buckle, deform or puncture, even under the harshest soil or ground water conditions. The SF20-DR will provide decades of reliable service.