ADS 04730100BS Corrugated Drainage Tubing With Sock, 4 inch x 100 FtFlexible and easier to install than other types of pipe. Used to move water away to prevent foundation and pooling problems. 100 ft coil handles large jobs with fewer joints. Size: 4" x 100' Perforated with filter wrap Flexible and easier to install than other types of pipe Used to move water away to prevent foundation and pooling problems 100 ft coil handles large jobs with fewer joints.