The first Drainage Pipe made specifically for yard Drainage, crawl space, interior basement de-watering, and exterior basement waterproofing. High Octane® drainage pipe needs 1"-2" aggregate to get the most out of its industry-leading 17 plus square inches of inlet per linear ft. The inlets are so large sediments wash through the pipe instead of plugging the pipe allowing for an open French drain that is not fully wrapped and contained. High Octane® drainage pipe takes in water faster than any other Drainage pipe on the planet. The industry leader in performance and reliability - the High Octane® drainage pipe is 2nd to none! This item requires freight charges which will be added at checkout. View list of freight costs based on your location.