good quality plastic ground protection boards 2×4 for swamp LiteTrack 2.4m x 1.2m x 12mm (8′ x 4′) £ 80.99 ex. VAT. Light duty ground protection mats, Walkways/Surface protection. small pattern 2×4 plastic ground mats st-HDPE road . Place a 2×4 board under the rubber floor mat. Set up a guide along the line.