This item is the return manifold for the Current Culture Under Current , Double Barrel and Evolution systems. Just pick your system size! Note: For Double Barrel models, use (2) UC return manifolds for your appropriate sized system. Plant Spacing: UC = 18 in Plant Centers, UCXL = 25 in Plant Centers, UCXL13 = 30 in Plant Centers and UCXXL13 = 40 in Plant Centers.
