Specification Brand : Airadyne BulletPoint1 : Efficient long-lasting Disc Diffuser designed to maximize the agitation, mixing, and turning of water and its contents. BulletPoint2 : Membrane diffusers are far less susceptible to clogging or fouling than stone diffusers because the algae cannot clog the membrane BulletPoint3 : The membrane closes over the diffuser inlet which aids in preventing backflow of water into the air supply line BulletPoint4 : This is a low maintenance item, as well as low cost to maintain. The EPDM membranes are replaceable, minimizing the impact on our environment BulletPoint5 : This diffuser has a 3/8" NPT threaded fitting/12 -6.0mm air holes/3.0 - 15.0 SCFM per diffuser/Overall Diameter: 5" Capacity : 5 gallons ExternallyAssignedProductIdentifier1 : 0843835001497 ExternallyAssignedProductIdentifier2 : 843835001497 Hazmat : 9 ItemName : 5" Coarse Bubble Disc Diffuser ItemPackageQuantity : 2 ItemShape : Round ItemTypeKeyword : pond-filtration-equipment Manufacturer : Airadyne Material : EPDM (Ethylene Propylene Diene Monomer Rubber) ModelName : Deluxe Accessory Kit for Powder Coated Windmills ModelNumber : AIR-70003 NumberOfItems : 1 PartNumber : AIR-70003 ProductDescription : Airadyne 5" Coarse Bubble Disc Diffuser ProductSiteLaunchDate : 2015-08-18T07:00:00.000Z SupplierDeclaredDgHzRegulation : unknown TargetSpecies : Fish UnitCount : 1 UnspscCode : 40142000