{"product_id":"s-p-crht-4-400-400mm-roof-mounted-ventilation-fan","title":"S\u0026P CRHT\/4-400 400mm Roof-Mounted Ventilation Fan","description":"\u003cp data-start=\"450\" data-end=\"1175\"\u003eThe \u003cstrong data-start=\"454\" data-end=\"508\"\u003eS\u0026amp;P CRHT\/4-400 400 mm Roof-Mounted Ventilation Fan\u003c\/strong\u003e is a powerful centrifugal extraction fan designed for efficient roof ventilation in commercial and industrial HVAC systems. It features a \u003cstrong data-start=\"647\" data-end=\"690\"\u003elow-profile horizontal discharge design\u003c\/strong\u003e that allows high airflow performance while minimizing roof installation height. The fan uses a \u003cstrong data-start=\"786\" data-end=\"842\"\u003ehigh-efficiency backward-curved centrifugal impeller\u003c\/strong\u003e combined with a \u003cstrong data-start=\"859\" data-end=\"895\"\u003ethree-phase external rotor motor\u003c\/strong\u003e to deliver reliable airflow and energy-efficient operation. Built with a \u003cstrong data-start=\"969\" data-end=\"1026\"\u003egalvanised steel base and spun aluminium weather cowl\u003c\/strong\u003e, the unit is engineered for long-lasting durability and protection against outdoor environmental conditions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1177\" data-end=\"1180\"\u003e\n\u003ch2 data-section-id=\"1967hx1\" data-start=\"1182\" data-end=\"1208\"\u003eMaterial \u0026amp; Construction\u003c\/h2\u003e\n\u003cul data-start=\"1209\" data-end=\"1818\"\u003e\n\u003cli data-section-id=\"18r7n7o\" data-start=\"1209\" data-end=\"1333\"\u003e\n\u003cp data-start=\"1211\" data-end=\"1333\"\u003e\u003cstrong data-start=\"1211\" data-end=\"1220\"\u003eBase:\u003c\/strong\u003e Heavy-duty galvanised sheet steel for strength and corrosion resistance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"efu4ld\" data-start=\"1334\" data-end=\"1453\"\u003e\n\u003cp data-start=\"1336\" data-end=\"1453\"\u003e\u003cstrong data-start=\"1336\" data-end=\"1345\"\u003eCowl:\u003c\/strong\u003e Spun aluminium weather hood designed for outdoor roof installation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fh9leg\" data-start=\"1454\" data-end=\"1581\"\u003e\n\u003cp data-start=\"1456\" data-end=\"1581\"\u003e\u003cstrong data-start=\"1456\" data-end=\"1469\"\u003eImpeller:\u003c\/strong\u003e Backward-curved centrifugal impeller for efficient airflow performance. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1yb1ly8\" data-start=\"1582\" data-end=\"1708\"\u003e\n\u003cp data-start=\"1584\" data-end=\"1708\"\u003e\u003cstrong data-start=\"1584\" data-end=\"1594\"\u003eMotor:\u003c\/strong\u003e External rotor \u003cstrong data-start=\"1610\" data-end=\"1634\"\u003ethree-phase AC motor\u003c\/strong\u003e with built-in thermal protection. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1yqc32c\" data-start=\"1709\" data-end=\"1818\"\u003e\n\u003cp data-start=\"1711\" data-end=\"1818\"\u003e\u003cstrong data-start=\"1711\" data-end=\"1721\"\u003eGuard:\u003c\/strong\u003e Steel finger-proof safety guard to prevent debris entry. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1820\" data-end=\"1823\"\u003e\n\u003ch2 data-section-id=\"1a3ueyz\" data-start=\"1825\" data-end=\"1842\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul data-start=\"1844\" data-end=\"2680\"\u003e\n\u003cli data-section-id=\"19qdqpe\" data-start=\"1844\" data-end=\"1906\"\u003e\n\u003cp data-start=\"1846\" data-end=\"1906\"\u003e\u003cstrong data-start=\"1846\" data-end=\"1863\"\u003eProduct Type:\u003c\/strong\u003e Centrifugal Roof-Mounted Ventilation Fan\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"l71y4y\" data-start=\"1907\" data-end=\"1932\"\u003e\n\u003cp data-start=\"1909\" data-end=\"1932\"\u003e\u003cstrong data-start=\"1909\" data-end=\"1919\"\u003eModel:\u003c\/strong\u003e CRHT\/4-400\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1wx25yg\" data-start=\"1933\" data-end=\"1965\"\u003e\n\u003cp data-start=\"1935\" data-end=\"1965\"\u003e\u003cstrong data-start=\"1935\" data-end=\"1952\"\u003eFan Diameter:\u003c\/strong\u003e \u003cstrong data-start=\"1953\" data-end=\"1963\"\u003e400 mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1bbguye\" data-start=\"1966\" data-end=\"2051\"\u003e\n\u003cp data-start=\"1968\" data-end=\"2051\"\u003e\u003cstrong data-start=\"1968\" data-end=\"1989\"\u003eAirflow Capacity:\u003c\/strong\u003e Up to \u003cstrong data-start=\"1996\" data-end=\"2011\"\u003e≈4,156 m³\/h\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ev8xf4\" data-start=\"2052\" data-end=\"2133\"\u003e\n\u003cp data-start=\"2054\" data-end=\"2133\"\u003e\u003cstrong data-start=\"2054\" data-end=\"2074\"\u003eStatic Pressure:\u003c\/strong\u003e Approx. \u003cstrong data-start=\"2083\" data-end=\"2093\"\u003e108 Pa\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"hltgb1\" data-start=\"2134\" data-end=\"2193\"\u003e\n\u003cp data-start=\"2136\" data-end=\"2193\"\u003e\u003cstrong data-start=\"2136\" data-end=\"2151\"\u003eMotor Type:\u003c\/strong\u003e External rotor \u003cstrong data-start=\"2167\" data-end=\"2191\"\u003ethree-phase AC motor\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"rmnakc\" data-start=\"2194\" data-end=\"2273\"\u003e\n\u003cp data-start=\"2196\" data-end=\"2273\"\u003e\u003cstrong data-start=\"2196\" data-end=\"2208\"\u003eVoltage:\u003c\/strong\u003e \u003cstrong data-start=\"2209\" data-end=\"2233\"\u003e230\/400 V – 50\/60 Hz\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"2376jl\" data-start=\"2274\" data-end=\"2347\"\u003e\n\u003cp data-start=\"2276\" data-end=\"2347\"\u003e\u003cstrong data-start=\"2276\" data-end=\"2286\"\u003eSpeed:\u003c\/strong\u003e Approx. \u003cstrong data-start=\"2295\" data-end=\"2307\"\u003e1379 RPM\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1e8bbjy\" data-start=\"2348\" data-end=\"2429\"\u003e\n\u003cp data-start=\"2350\" data-end=\"2429\"\u003e\u003cstrong data-start=\"2350\" data-end=\"2366\"\u003ePower Input:\u003c\/strong\u003e Approx. \u003cstrong data-start=\"2375\" data-end=\"2387\"\u003e0.426 kW\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Direct Duct Supplies","offers":[{"title":"Default Title","offer_id":57353650635077,"sku":null,"price":1205.57,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1037\/5168\/0325\/files\/S_PCRHB4-225N225mmRoof-MountedFan_2880dbdb-f4f2-47b3-9ab6-1acdf20fc6c9.png?v=1773217136","url":"https:\/\/directductsupplies.com\/products\/s-p-crht-4-400-400mm-roof-mounted-ventilation-fan","provider":"Direct Duct Supplies","version":"1.0","type":"link"}