The air diffuser base allows you to mount air diffuser(s) firmly at the bottom of the pond and keeps the air diffusers up out of the mud. The base is heavy duty rugged plastic with soft edges. The air diffuser base is designed with a hollow base that can be filled with sand or gravel. Choose the number of disc diffusers for your installation needs. The Matala EPDM disc diffusers are designed for industry heavy duty installation. Precision perforated I-shaped slits open when airflow is present and close when airflow is stopped, which increase the slits resist from tearing, and stay cleaner longer. These diffusers offer the lowest back pressure in the market, only adds less than 6 inches of water depth back pressure, allowing you to utilize your air pump in the most efficient way. All different model types comes with a single 3/4-inch PT female threaded outlet connection. 9 and 12-inch EPDM disc diffuser available. The flow rate will be almost double with the 12-inch diffuser. Award winning design! Matala offers an air diffuser assembly with hollow base that can be filled with sand or gravel. This eliminates the need for bricks and straps to get the diffuser to sink. The base is heavy duty rugged plastic with soft edges. Fill the base with small gravel and sand and purge of all air bubbles. The base comes with a friendly multi-barb that will allow connection to various sizes of air hose including 3/8", 1/2", 5/8" and 1". Features and Benefits: The air diffuser platform mounts difuser firmly to bottom of pond up out of any mud. Hollow base is filled with sand or gravel and water to weigh it down and keep shipping cost low. MDB11 - Single Air Base w/ 9-inch disc Single air base with a 9-inch disc handles airflow handles airflow 0.9 - 4.2 cfm / 25 - 120 lpm. Recommended for 25 lpm - 80 lpm air pumps. MDB11-12 - Single Air Base w/ 12-inch disc This utilizes the single air base but incorporates the 12-inch diffuser and handles airflow 2.8 - 7.0 cfm / 80 - 200 lpm. Recommended for 80 lpm to 150 lpm air pumps. MDB12-12 - Single Air Base w/ (2) 12-inch discs This utilizes the single air base but incorporates the (2) 12-inch diffusers and handles airflow 5.6 - 14.0 cfm / 160 - 400 lpm. Recommended for 200 lpm to 350 lpm air pumps. This configuration will give a slightly smaller bubble size for a gentler roll at the surface of pond. MDB12 - Single Air Base w/ (2) 9-inch discs The MDB12 comes complete with two 9" air discs supported above the base. Includes multi-barb for hose connection. This handles airflow 2.1 - 8.4 cfm / 60 - 240 lpm. Recommended for 100 lpm - 200 lpm air pumps. This configuration will give a slightly smaller bubble size for a gentler roll at the surface of pond. MDB22 - Dual Air Base w/ 9 inch discs Double air base handles airflow 2.1 - 8.4 cfm / 60 - 240 lpm. Recommended for 100 lpm - 200 lpm air pumps. This configuration will give a slightly smaller bubble size for a gentler roll at the surface of pond. MDB22-12 - Dual Air Base w/ (2) 12-inch discs This uses the double air base with (2) 12-inch discs and handles airflow 5.6 - 14.0 cfm / 160 - 400 lpm. Recommended for 200 lpm to 350 lpm air pumps. This configuration will give a slightly smaller bubble size for a gentler roll at the surface of pond. MDB24 - Dual Air Base w/ (4) 9-inch discs Quadruple 9" head (MDB24) handles airflow 4.2 -16.8 cfm / 120 - 480 lpm. Recommended for 150 lpm to 250 lpm air pumps. This configuration will give a slightly smaller bubble size for a gentler roll at the surface of pond. MDB24-12 - Dual Air Base w/ (4) 12 inch discs This utilizes the double air base with (4) 12-inch discs Category Model Air Volume (CFM) Air Volume (CFM) Dimensions (in) Dimensions (mm) Weight (lbs) Weight (kg) 9-inch Diffuser MDB11 1.4-4.2 40-120 11x10x5 290x258x130 2.6 1.2 9-inch Diffuser MDB12 2.8-8.4 80-240 22x11x10 546x290x264 4.2 1.9 9-inch Diffuser MDB22 2.8-8.4 80-240 23x10x5 580x258x130 5.5 2.5 9-inch Diffuser MDB24 5.6-16.8 160-480 23x22x10 580x546x264 8.8 4 12-inch Diffuser MDB11-12 3.8-7 100-200 13x12x5 325x310x135 4 1.8 12-inch Diffuser MDB12-12 7.6-14 200-400 25x13x11 632x325x277 6.6 3 12-inch Diffuser MDB22-12 7.6-14 200-400 25x12x6 635x310x141 7.9 3.6 12-inch Diffuser MDB24-12 15.28-28 400-800 25x25x11 635x632x269 13.7 6.2 Related Parts & Information Matala Diffuser Discs Matala Spec Sheet
