{"product_id":"poly-duct-adapter-reducer-hydroponic-ventilation","title":"Poly Duct Adapter Reducer | Hydroponic Ventilation Size Reducer 150mm-300mm Australia","description":"\u003ch2\u003ePoly Duct Adapter Reducer. Hydroponic Ventilation Size Reducer for Grow Room Airflow Systems (150mm–300mm)\u003c\/h2\u003e\n\u003cp\u003ePoly Duct Adapter Reducers are designed to connect different duct sizes within hydroponic ventilation systems. These fittings enable seamless transitions between inline fans, carbon filters, and ducting, ensuring efficient airflow across mixed-diameter setups without turbulence or pressure loss.\u003c\/p\u003e\n\u003cp\u003eDesigned for low-resistance air transfer, reducer adapters maintain airflow efficiency while allowing flexible system design in grow rooms and grow tents. Available in three size configurations covering 200mm to 150mm, 250mm to 200mm, and 300mm to 250mm transitions.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless duct size transitions with minimal restriction.\u003c\/strong\u003e Tapered internal geometry reduces turbulence at the size change point, maintaining airflow efficiency across mismatched duct diameters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnects inline fans, carbon filters, and ducting of different sizes.\u003c\/strong\u003e Enables flexible system design where fan outlet, filter inlet, and ducting diameters do not match without requiring additional adapters or modifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid poly construction maintains shape under airflow pressure.\u003c\/strong\u003e Durable polymer body resists deformation and collapse in continuous ventilation applications, ensuring consistent airflow geometry over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree size configurations for standard grow room transitions.\u003c\/strong\u003e 200-150mm, 250-200mm, and 300-250mm variants cover the most common duct size mismatches in hydroponic ventilation systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect compatibility with standard ducting and fittings.\u003c\/strong\u003e Standard duct sizing ensures immediate compatibility with flexible ducting, inline fans, Y connectors, and carbon filters without modification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVentilation Performance in Hydroponic Systems\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize transition.\u003c\/strong\u003e Connects mismatched duct diameters efficiently, enabling flexible ventilation system design without performance compromise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow continuity.\u003c\/strong\u003e Maintains smooth airflow with minimal restriction across the size change point for consistent inline fan output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem flexibility.\u003c\/strong\u003e Enables scalable ventilation configurations where different components use different duct diameters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure efficiency.\u003c\/strong\u003e Tapered internal profile reduces turbulence between size changes, minimising static pressure loss at the transition point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad compatibility.\u003c\/strong\u003e Suitable for inline fans, carbon filters, Y connectors, and flexible ducting across all standard hydroponic ventilation configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable Size Configurations\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e200mm to 150mm reducer.\u003c\/strong\u003e Transitions a 200mm duct or fan outlet down to a 150mm ducting run or carbon filter inlet. \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e250mm to 200mm reducer.\u003c\/strong\u003e Transitions a 250mm duct or fan outlet down to a 200mm ducting run or filter connection. \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300mm to 250mm reducer.\u003c\/strong\u003e Large-diameter transition for commercial grow room ventilation systems connecting 300mm and 250mm duct components. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePoly duct adapter reducer for hydroponic grow room ventilation size transitions Australia\u003c\/li\u003e\n\u003cli\u003eDuct reducer fitting for inline fan and carbon filter connections in grow tent systems\u003c\/li\u003e\n\u003cli\u003eVentilation size reducer for mixed-diameter ducting configurations in indoor cultivation\u003c\/li\u003e\n\u003cli\u003eHVAC duct size transition fitting for controlled environment agriculture systems\u003c\/li\u003e\n\u003cli\u003eGrow room airflow adapter for connecting mismatched fan, filter, and ducting diameters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydroponic grow room ventilation.\u003c\/strong\u003e Enables efficient connection of inline fans, carbon filters, and ducting of different diameters without airflow restriction or system modification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrow tent airflow systems.\u003c\/strong\u003e Compact reducer fittings suit all standard grow tent ventilation configurations where fan and filter duct sizes differ.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInline fan and carbon filter connections.\u003c\/strong\u003e Bridges size differences between fan outlets and filter inlets for direct, low-resistance connection without additional adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHVAC duct size transitions.\u003c\/strong\u003e Suitable for broader ventilation system applications beyond hydroponics where duct diameter changes are required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType.\u003c\/strong\u003e Duct adapter reducer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial.\u003c\/strong\u003e Rigid polymer (poly) construction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Sizes.\u003c\/strong\u003e 200-150mm, 250-200mm, 300-250mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication.\u003c\/strong\u003e Hydroponic ventilation, grow room airflow, HVAC duct size transitions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility.\u003c\/strong\u003e Standard flexible ducting, inline fans, carbon filters, Y connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHS Code.\u003c\/strong\u003e 391790\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat size do I need for Poly Duct Adapter Reducer?\u003c\/h3\u003e\n\u003cp\u003eDucting and ventilation fittings are sized by internal diameter in millimetres (100mm, 125mm, 150mm, 200mm). Always match your fittings to your fan and filter flange size. Standard grow tent setups use 100mm or 125mm ducting for small tents and 150mm or 200mm for larger tents running higher-output fans and carbon filters.\u003c\/p\u003e\n\u003ch3\u003eWhat material should my ducting be made from?\u003c\/h3\u003e\n\u003cp\u003eFor most indoor growing applications, flexible aluminium ducting is the standard choice — it is lightweight, easy to route around obstacles, and resistant to the humidity levels found in grow tents. Acoustic or insulated ducting is recommended if noise reduction is a priority. Rigid ducting offers lower airflow resistance but is more complex to install.\u003c\/p\u003e\n\u003ch3\u003eDoes Poly Duct Adapter Reducer ship fast within Australia?\u003c\/h3\u003e\n\u003cp\u003eYes — Poly Duct Adapter Reducer ships from our Australian warehouse with fast tracked delivery Australia-wide. Most east coast orders arrive within 2–5 business days. WA, NT, and TAS orders typically arrive within 5–12 business days.\u003c\/p\u003e","brand":"Apex Grow","offers":[{"title":"Adapter Reducer 200-150","offer_id":43197736583231,"sku":"RED-200-150","price":39.95,"currency_code":"AUD","in_stock":true},{"title":"Adapter Reducer 250-200","offer_id":43197736615999,"sku":"RED-200-151","price":39.95,"currency_code":"AUD","in_stock":true},{"title":"Adapter Reducer 300-250","offer_id":43197736648767,"sku":"RED-200-152","price":39.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/6898\/8479\/files\/DYBTOR200150-Adapter-Reducer-200_150_1000x1000_Grey-1-600x600.png?v=1777523417","url":"https:\/\/apexgrow.com.au\/products\/poly-duct-adapter-reducer-hydroponic-ventilation","provider":"Apex Grow","version":"1.0","type":"link"}