How does DriveGrid work Subsoil Assessment Packaging: One roll does the typical 20’ x 60’ driveway. Roll Size: 13’ x 120’ Weight: 57Lbs. ( 26Kg) Recommended Overlap: 12” or more Minimum aggregate over grid: 4” Maximum aggregate over grid: 12” (diminishing returns over 12”) DriveGrid™ is available through most Unilock Dealers. Contact Unilock at 1-800-UNILOCK … Continue reading DriveGrid