4 in. (10,2 cm) retaining cap and vandal resistant locking grate tops a 36" (91,4 cm) semi-rigid mesh tube | Factory installed swing assemblies with a 1401 (0.25 gpm; 0,95 l/m) bubbler on a fixed riser makes connecting to lateral lines easy | Optional sand sock is ideal for use in sandy soil - Right size for shrubs - Minimizes transplant shock | Directs water to root ball and adjacent soil - Supplements top-down soaking - Quicker tree and shrub growth | Provide a stable foundation against high winds - Reduces waste due to run-off - Minimizes evaporation