Product Information Product Name : D-500-SManufacturer: Aeris AerobicsOriginal Certification Date: 03/30/2020Certification Date: 03/30/2020Certification End Date: 03/30/2027Capacity: 500Material: ConcreteType: Aerobic Treatment SystemClass: Class 1 Certifications Certification: Certifications: NSF/ANSI Standard 40 Standard year: 2023 Version Year of Original Standard: 2019SPE#: 358 Approved Approved Aerators: Manufacturer: HiblowHi Blow model: HP-40/40A Manufacturer: HiblowHi Blow model: XP-40/40A Approved Diffusers: Manufacturer: HiblowModel: TP-250 Polypropylene Approved Alarms: Manufacturer: Aeris AerobicsModel: Tran T2