Air Diffuser Manifolds Now self-weighted for easy installation Includes check valve to prevent water from filling air line when not in use Polyethylene underlay keep diffusers from settling into the mud and prevents sediment erosion during operation Comes with 6″ long rubber membrane air diffusers Includes tubing strain relief and fittings to connect to 3/8″, 1/2″ or 5/8″ ID tubing DM2 - 2 Diffuser Manifold Dimensions 11 1/4″ X 20″ underlay Inlet 3/8″, 1/2″ or 5/8″ Barb Recommended Air flow .8 – 3.4 cfm DM4 - 4 Diffuser Manifold Dimensions 22 1/2″ x 22 1/2″ Inlet 3/8″, 1/2″ or 5/8″ Barb Recommended Air flow 1.6 – 6.8 cfm DM6 - 6 Diffuser Manifold Dimensions 22 1/2″ x 22 1/2″ Inlet 3/8″, 1/2″ or 5/8″ Barb Recommended Air flow 2.4 – 10.2 cfm
