Product Information Product Name : D-500-N-750PTManufacturer: Aeris AerobicsOriginal Certification Date: 05/12/2015Certification Date: 05/12/2022Certification End Date: 05/12/2029Capacity: 500Material: ConcreteType: Aerobic Treatment SystemClass: Class 1 Certifications Certification: Certifications: NSF/ANSI Standard 40 Standard year: 2023 Version Year of Original Standard: 2013SPE#: 244 Approved Approved Aerators: Manufacturer: HiblowHi Blow model: HP-40 Approved Diffusers: Manufacturer: HiblowModel: TP-250 Polypropylene Approved Alarms: Manufacturer: Aeris AerobicsModel: Tran T2