{"product_id":"ac-infinity-inline-duct-fan-silencer","title":"AC Infinity Inline Duct Fan Silencer – Inline Fan Muffler","description":"\u003ch2\u003eQuieten Your Extraction Without Choking the Airflow\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eAC Infinity Inline Duct Fan Silencer\u003c\/strong\u003e fits into your ventilation run and soaks up the rush and drone that an \u003cstrong\u003einline extractor fan\u003c\/strong\u003e sends down the ducting. Inside a \u003cstrong\u003egalvanised steel\u003c\/strong\u003e body, a chamber lined with \u003cstrong\u003eegg-crate neoprene foam\u003c\/strong\u003e breaks up sound waves while the air passes straight through, cutting fan noise by \u003cstrong\u003eup to 50%\u003c\/strong\u003e. Twin flanges take standard flexible or rigid ducting, so it suits AC Infinity Cloudline fans and any other inline fan of the same diameter.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 50% less fan noise\u003c\/strong\u003e — wave-pattern neoprene foam absorbs sound before it reaches the room\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStraight-through chamber\u003c\/strong\u003e — the foam lines the walls rather than blocking the bore, so the fan keeps its airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReversible flanges\u003c\/strong\u003e — fit it either way round, on the intake or the exhaust side of the fan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGalvanised steel shell\u003c\/strong\u003e — resists corrosion in humid grow rooms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits anywhere in the run\u003c\/strong\u003e — after the fan, after a carbon filter or at the duct outlet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight to hang\u003c\/strong\u003e — 1.04 kg (100mm), 1.77 kg (150mm) or 2.72 kg (200mm)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Is My Inline Fan So Loud?\u003c\/h3\u003e\u003cp\u003eMost extraction noise is not the motor itself but turbulent air and vibration carried along the ducting and amplified by thin tent walls. The usual fix, turning the fan down, costs you \u003cstrong\u003eairflow\u003c\/strong\u003e, and an under-ventilated space quickly builds \u003cstrong\u003eheat and humidity\u003c\/strong\u003e, the conditions mould and mildew thrive in. A silencer deals with the sound instead, so the fan can run at the speed the room needs.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust side first:\u003c\/strong\u003e fit it straight after the fan outlet, where most noise travels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect:\u003c\/strong\u003e push ducting over each flange, secure it with a clamp and seal the joints with foil tape.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupport it:\u003c\/strong\u003e hang it from the tent frame so its weight does not sit on the fan or ducting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep runs short and straight:\u003c\/strong\u003e every bend adds turbulence, noise and resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake noise:\u003c\/strong\u003e a second silencer on the intake side quietens that too.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModels:\u003c\/strong\u003e AC-DSA4 (100mm \/ 4 in) · AC-DSA6 (150mm \/ 6 in) · AC-DSA8 (200mm \/ 8 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuct opening:\u003c\/strong\u003e 100mm (4 in), 150mm (6 in) or 200mm (8 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange diameter:\u003c\/strong\u003e 10.0 cm (100mm) · 15.1 cm (150mm) · 20.2 cm (200mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange length:\u003c\/strong\u003e 3.8 cm, reversible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal length:\u003c\/strong\u003e 38.1 cm (100mm) · 40.6 cm (150mm) · 45.4 cm (200mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody length:\u003c\/strong\u003e 30.4 cm (100mm) · 32.7 cm (150mm) · 37.5 cm (200mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody diameter:\u003c\/strong\u003e 17.7 cm (100mm) · 22.7 cm (150mm) · 27.8 cm (200mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise reduction:\u003c\/strong\u003e up to 50%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShell:\u003c\/strong\u003e galvanised steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlanges:\u003c\/strong\u003e aluminium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound absorber:\u003c\/strong\u003e neoprene foam, egg-crate pattern\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.04 kg \/ 2.30 lb (100mm) · 1.77 kg \/ 3.90 lb (150mm) · 2.72 kg \/ 6.0 lb (200mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting:\u003c\/strong\u003e intake or exhaust, anywhere in the duct run\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cdiv class=\"hcs-faq\"\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWill a silencer reduce my fan's airflow?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eVery little. The foam lines the walls of a chamber the same bore as the ducting, so the air passes straight through; as with any extra length of duct, keep the run short and straight to protect airflow.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eDoes it only work with AC Infinity fans?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo. It is a passive sound absorber with 100mm (4 in), 150mm (6 in) or 200mm (8 in) flanges, so it works with any inline fan and flexible or rigid ducting of the same diameter.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWhere is the best place to fit it?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eDirectly after the fan on the exhaust side, which is where most of the noise travels. AC Infinity also says it can go anywhere else in the run, between the fan and the ducting or on the intake.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWill it stop the hum I hear through the tent frame?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eIt is made for the air-rush noise inside the ducting. Hum carried through the frame is vibration, which is better tackled with an anti-vibration coupler between the fan and the ducting, plus soft hangers.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003ch3\u003eWorks Well With\u003c\/h3\u003e\u003cdiv class=\"hcs-related\" style=\"display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 0;\"\u003e\n\u003ca href=\"\/products\/ac-infinity-cloudline-pro-s-series-inline-fan\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/Cloudline_Pro_S4_1_70ed1799-172d-4f92-9f21-39f08c53cb94.jpg?v=1784653064\u0026amp;width=160\" alt=\"AC Infinity Cloudline PRO S-Series Inline Fan\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eAC Infinity Cloudline PRO S-Series Inline Fan\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eThe quiet EC inline fan it pairs with\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/ac-infinity-noise-reduction-clamp\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/StorePhoto1__27801.1657905756.jpg?v=1790088516\u0026amp;width=160\" alt=\"AC Infinity Noise Reduction Clamp\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eAC Infinity Noise Reduction Clamp\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eStops fan vibration reaching the ducting\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/fast-clamps-4-12\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/Fast-clamps-group-medium_landscape.jpg?v=1746904795\u0026amp;width=160\" alt=\"Padded Fast Clamps\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003ePadded Fast Clamps\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eSecures ducting onto each flange\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"AC Infinity","offers":[{"title":"100mm (4 in)","offer_id":53931173609738,"sku":"ENV-ACIN-056-01","price":41.9,"currency_code":"GBP","in_stock":true},{"title":"150mm (6 in)","offer_id":53931173642506,"sku":"ENV-ACIN-056-02","price":59.9,"currency_code":"GBP","in_stock":true},{"title":"200mm (8 in)","offer_id":53931173675274,"sku":"ENV-ACIN-056-03","price":85.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/ac-infinity-inline-duct-fan-silencer-100mm-4-in-1.jpg?v=1792305035","url":"https:\/\/hydrocropshop.co.uk\/products\/ac-infinity-inline-duct-fan-silencer","provider":"Hydro Crop Shop","version":"1.0","type":"link"}