Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low View: 12 24 All Quick View Quick View Aeration DiffusersTubular Membrane Diffuser 8″–1/2″ MPT $20.42 Add to cart Quick View Quick View Aeration DiffusersTubular Membrane Diffuser 12″–3/8-1/2″ Barb $32.21 Add to cart Quick View Quick View Aeration DiffusersTubular Membrane Diffuser 12″–1/2″ MPT $32.21 Add to cart 1 2