A hot tub air and water supply manifold assembly , comprising: a water ingress conduit defining a first longitudinal axis and configured to receive water; a first air ingress conduit defining a second longitudinal axis parallel to the first longitudinal axis and configured to receive air, the first air ingress conduit having a periphery joined to a first portion of a periphery of the water ingress conduit; a first water egress port in fluid communication with the water ingress conduit; a second water egress port in fluid communication with the water ingress conduit; a first air egress port in fluid communication with the first air ingress conduit; wherein the first water egress port and the first air egress port are disposed substantially parallel and adjacent to each other, and are configured to channel streams of water and air, respectively, to a first dual extrusion tube ; characterized in that the assembly further comprises: a second air ingress conduit defining a third longitudinal axis parallel to the first longitudinal axis and configured to receive air, the second air ingress conduit having a periphery joined to a second portion of the periphery of the water ingress conduit; a second air egress port in fluid communication with the second air ingress conduit; and wherein the second water egress port and the second air egress port are disposed substantially parallel and adjacent to each other, and are configured to channel streams of water and air, respectively, to a second dual extrusion tube . a water ingress conduit defining a first longitudinal axis and configured to receive water; a first air ingress conduit defining a second longitudinal axis parallel to the first longitudinal axis and configured to receive air, the first air ingress conduit having a periphery joined to a first portion of a periphery of the water ingress conduit; a first water egress port in fluid communication with the water ingress conduit; a second water egress port in fluid communication with the water ingress conduit; a first air egress port in fluid communication with the first air ingress conduit; wherein the first water egress port and the first air egress port are disposed substantially parallel and adjacent to each other, and are configured to channel streams of water and air, respectively, to a first dual extrusion tube ; characterized in that the assembly further comprises: a second air ingress conduit defining a third longitudinal axis parallel to the first longitudinal axis and configured to receive air, the second air ingress conduit having a periphery joined to a second portion of the periphery of the water ingress conduit; a second air egress port in fluid communication with the second air ingress conduit; and wherein the second water egress port and the second air egress port are disposed substantially parallel and adjacent to each other, and are configured to channel streams of water and air, respectively, to a second dual extrusion tube . a second air ingress conduit defining a third longitudinal axis parallel to the first longitudinal axis and configured to receive air, the second air ingress conduit having a periphery joined to a second portion of the periphery of the water ingress conduit; a second air egress port in fluid communication with the second air ingress conduit; and wherein the second water egress port and the second air egress port are disposed substantially parallel and adjacent to each other, and are configured to channel streams of water and air, respectively, to a second dual extrusion tube . <EOS>