{"product_id":"black-plastic-square-flange-connector-75-100-120-150mm-air-duct","title":"Black Square Flange Connector 75–150mm | ABS Plastic Duct Fitting","description":"\n\u003ch2\u003eBlack Plastic Square Flange Connector – Air Ducting Made Easy\u003c\/h2\u003e\n\u003cp\u003eKeep your ventilation system running smoothly with this durable \u003cstrong\u003eBlack Plastic Square Flange Connector\u003c\/strong\u003e. Available in four popular sizes — \u003cstrong\u003e75mm, 100mm, 120mm, and 150mm\u003c\/strong\u003e — this straight flange fitting is the ideal solution for connecting round air ducts to walls, ceilings, or equipment panels. Whether you're setting up a grow room, bathroom extractor, kitchen ventilation, or HVAC ducting, this connector delivers a secure, low-resistance airflow connection every time.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Quality ABS Plastic\u003c\/strong\u003e – Lightweight yet strong, with excellent corrosion resistance for long-lasting performance in humid or dusty environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmooth Interior Surface\u003c\/strong\u003e – Minimises air resistance and turbulence for efficient airflow throughout your ducting system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Flange Plate\u003c\/strong\u003e – Flat base design makes wall mounting straightforward, creating a clean, professional finish.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Sizing\u003c\/strong\u003e – Choose from 75mm, 100mm, 120mm, or 150mm diameter to match your existing duct work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Purpose Design\u003c\/strong\u003e – Suitable for use as both an air inlet and air outlet in indoor ventilation setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility\u003c\/strong\u003e – Connects standard round ducts to flat surfaces such as walls, floors, and ceilings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation\u003c\/strong\u003e – Simple push-fit connection with a mounting flange for secure wall fixing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e ABS Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColour:\u003c\/strong\u003e Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Diameters:\u003c\/strong\u003e 75mm \/ 100mm \/ 120mm \/ 150mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Square Bottom Straight Flange\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Air inlet \/ outlet, wall ducting, ventilation equipment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 1 × Flange Connector\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndoor grow tents and hydroponic setups\u003c\/li\u003e\n  \u003cli\u003eBathroom and kitchen extractor fan installations\u003c\/li\u003e\n  \u003cli\u003eHVAC and air conditioning duct connections\u003c\/li\u003e\n  \u003cli\u003eWorkshop and garage ventilation systems\u003c\/li\u003e\n  \u003cli\u003eHome and commercial air ducting projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on indoor air quality and ventilation best practices, visit the \u003ca href=\"https:\/\/www.epa.gov\/indoor-air-quality-iaq\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEPA Indoor Air Quality Resource\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-pack-304-stainless-steel-key-rings-2-54cm-flat-split-rings\"\u003e10-Pack 304 Stainless Steel Key Rings – 2.54cm Split Flat Rings\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hex-shank-wire-twister-drill-attachment-rebar-tie-tool\"\u003e1\/4\" Hex Shank Wire Twister Drill Attachment | Rebar Tie Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2-inch-drive-wheel-protector-impact-socket-set-storage-case\"\u003e1\/2\" Drive Wheel Protector Impact Socket Set + Storage Case\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003ePlease note: Minor measurement variations may occur due to manual sizing. Colours may appear slightly different depending on monitor display settings.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What sizes does this plastic square flange connector come in?\u003c\/h4\u003e\n\u003cp\u003eA: This flange connector is available in four standard duct sizes: 75mm, 100mm, 120mm, and 150mm diameter. Select the size that matches your existing ducting or ventilation equipment for a proper, airtight fit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What material is the flange connector made from?\u003c\/h4\u003e\n\u003cp\u003eA: The connector is made from high-quality ABS plastic, which offers excellent strength, corrosion resistance, and durability — making it suitable for humid, dusty, or chemically mild environments such as bathrooms, kitchens, and grow rooms.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this flange connector be used for both air inlet and air outlet applications?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The square flange design is suitable for both air inlet and air outlet applications. It can be wall-mounted as part of a ventilation duct system or used to connect round pipes to flat surfaces in a variety of indoor ventilation setups.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How is the flange connector installed?\u003c\/h4\u003e\n\u003cp\u003eA: Simply align the square flange plate against your wall or panel surface, secure it using appropriate fasteners through the flange mounting holes, then connect your round duct to the circular collar. No specialist tools are required for a standard installation.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What sizes does this plastic square flange connector come in?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This flange connector is available in four standard duct sizes: 75mm, 100mm, 120mm, and 150mm diameter. Select the size that matches your existing ducting or ventilation equipment for a proper, airtight fit.\"}}, {\"@type\": \"Question\", \"name\": \"What material is the flange connector made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The connector is made from high-quality ABS plastic, which offers excellent strength, corrosion resistance, and durability — making it suitable for humid, dusty, or chemically mild environments such as bathrooms, kitchens, and grow rooms.\"}}, {\"@type\": \"Question\", \"name\": \"Can this flange connector be used for both air inlet and air outlet applications?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The square flange design is suitable for both air inlet and air outlet applications. 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