See all products of Compact manifold for central heating system Manifold for heating and cooling systems. 2 outlets. Manifold for heating and cooling systems. 2+1 outlets. Manifold for heating and cooling systems. 3 outlets. Manifold for heating and cooling systems. 4 outlets. Manifold for heating and cooling systems. 2 outlets. Manifold for heating and cooling systems. 3 outlets. Manifold for heating and cooling systems. 4 outlets.