{"product_id":"s-p-crht-4-355-355mm-roof-mounted-fan","title":"S\u0026P CRHT\/4-355 355mm Roof-Mounted Fan","description":"\u003cp data-start=\"86\" data-end=\"161\"\u003e\u003cstrong data-start=\"86\" data-end=\"120\"\u003eMeta Permalink (65 characters)\u003c\/strong\u003e\u003cbr data-start=\"120\" data-end=\"123\"\u003esp-crht-4-355-355mm-roof-mounted-fan\u003c\/p\u003e\n\u003cp data-start=\"163\" data-end=\"334\"\u003e\u003cstrong data-start=\"163\" data-end=\"200\"\u003eMeta Description (140 characters)\u003c\/strong\u003e\u003cbr data-start=\"200\" data-end=\"203\"\u003eS\u0026amp;P CRHT\/4-355 355mm roof-mounted centrifugal fan with horizontal discharge, aluminium impeller, IP54 motor and durable steel base.\u003c\/p\u003e\n\u003chr data-start=\"336\" data-end=\"339\"\u003e\n\u003ch1 data-section-id=\"qjicmc\" data-start=\"341\" data-end=\"380\"\u003eS\u0026amp;P CRHT\/4-355 355mm Roof-Mounted Fan\u003c\/h1\u003e\n\u003ch2 data-section-id=\"14exl9a\" data-start=\"382\" data-end=\"422\"\u003eProduct Description (≈500 characters)\u003c\/h2\u003e\n\u003cp data-start=\"423\" data-end=\"1103\"\u003eThe \u003cstrong data-start=\"427\" data-end=\"469\"\u003eS\u0026amp;P CRHT\/4-355 355 mm Roof-Mounted Fan\u003c\/strong\u003e is a powerful centrifugal extraction fan designed for commercial and industrial roof ventilation systems. It features a \u003cstrong data-start=\"590\" data-end=\"634\"\u003ehorizontal discharge, low-profile design\u003c\/strong\u003e that allows efficient airflow while maintaining a compact roof installation height. The fan uses a \u003cstrong data-start=\"734\" data-end=\"790\"\u003ehigh-efficiency backward-curved centrifugal impeller\u003c\/strong\u003e and a \u003cstrong data-start=\"797\" data-end=\"833\"\u003ethree-phase external rotor motor\u003c\/strong\u003e, ensuring reliable airflow performance and energy efficiency. Constructed with a \u003cstrong data-start=\"915\" data-end=\"972\"\u003egalvanised steel base and spun aluminium weather cowl\u003c\/strong\u003e, the unit provides excellent durability and protection against harsh outdoor environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1105\" data-end=\"1108\"\u003e\n\u003ch2 data-section-id=\"1967hx1\" data-start=\"1110\" data-end=\"1136\"\u003eMaterial \u0026amp; Construction\u003c\/h2\u003e\n\u003cul data-start=\"1137\" data-end=\"1754\"\u003e\n\u003cli data-section-id=\"haudvt\" data-start=\"1137\" data-end=\"1256\"\u003e\n\u003cp data-start=\"1139\" data-end=\"1256\"\u003e\u003cstrong data-start=\"1139\" data-end=\"1148\"\u003eBase:\u003c\/strong\u003e Galvanised sheet steel for strong corrosion-resistant construction. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"8iewjq\" data-start=\"1257\" data-end=\"1372\"\u003e\n\u003cp data-start=\"1259\" data-end=\"1372\"\u003e\u003cstrong data-start=\"1259\" data-end=\"1268\"\u003eCowl:\u003c\/strong\u003e Spun aluminium weather hood designed for outdoor installations. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1k5bxf4\" data-start=\"1373\" data-end=\"1506\"\u003e\n\u003cp data-start=\"1375\" data-end=\"1506\"\u003e\u003cstrong data-start=\"1375\" data-end=\"1388\"\u003eImpeller:\u003c\/strong\u003e Backward-curved centrifugal impeller made from aluminium for high efficiency. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1xnwysm\" data-start=\"1507\" data-end=\"1626\"\u003e\n\u003cp data-start=\"1509\" data-end=\"1626\"\u003e\u003cstrong data-start=\"1509\" data-end=\"1519\"\u003eMotor:\u003c\/strong\u003e External rotor three-phase motor with thermal overload protection. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"55rujt\" data-start=\"1627\" data-end=\"1754\"\u003e\n\u003cp data-start=\"1629\" data-end=\"1754\"\u003e\u003cstrong data-start=\"1629\" data-end=\"1646\"\u003eSafety Guard:\u003c\/strong\u003e Steel finger-proof guard to prevent debris entry and ensure safety. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1756\" data-end=\"1759\"\u003e\n\u003ch2 data-section-id=\"1a3ueyz\" data-start=\"1761\" data-end=\"1778\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul data-start=\"1780\" data-end=\"2613\"\u003e\n\u003cli data-section-id=\"19qdqpe\" data-start=\"1780\" data-end=\"1842\"\u003e\n\u003cp data-start=\"1782\" data-end=\"1842\"\u003e\u003cstrong data-start=\"1782\" data-end=\"1799\"\u003eProduct Type:\u003c\/strong\u003e Centrifugal Roof-Mounted Ventilation Fan\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"l7qo1h\" data-start=\"1843\" data-end=\"1868\"\u003e\n\u003cp data-start=\"1845\" data-end=\"1868\"\u003e\u003cstrong data-start=\"1845\" data-end=\"1855\"\u003eModel:\u003c\/strong\u003e CRHT\/4-355\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"16y08dr\" data-start=\"1869\" data-end=\"1901\"\u003e\n\u003cp data-start=\"1871\" data-end=\"1901\"\u003e\u003cstrong data-start=\"1871\" data-end=\"1888\"\u003eFan Diameter:\u003c\/strong\u003e \u003cstrong data-start=\"1889\" data-end=\"1899\"\u003e355 mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1jledsr\" data-start=\"1902\" data-end=\"1987\"\u003e\n\u003cp data-start=\"1904\" data-end=\"1987\"\u003e\u003cstrong data-start=\"1904\" data-end=\"1925\"\u003eAirflow Capacity:\u003c\/strong\u003e Up to \u003cstrong data-start=\"1932\" data-end=\"1947\"\u003e≈2,779 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=\"19n6jdn\" data-start=\"1988\" data-end=\"2069\"\u003e\n\u003cp data-start=\"1990\" data-end=\"2069\"\u003e\u003cstrong data-start=\"1990\" data-end=\"2010\"\u003eStatic Pressure:\u003c\/strong\u003e Approx. \u003cstrong data-start=\"2019\" data-end=\"2029\"\u003e103 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=\"2070\" data-end=\"2129\"\u003e\n\u003cp data-start=\"2072\" data-end=\"2129\"\u003e\u003cstrong data-start=\"2072\" data-end=\"2087\"\u003eMotor Type:\u003c\/strong\u003e External rotor \u003cstrong data-start=\"2103\" data-end=\"2127\"\u003ethree-phase AC motor\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"rmnakc\" data-start=\"2130\" data-end=\"2209\"\u003e\n\u003cp data-start=\"2132\" data-end=\"2209\"\u003e\u003cstrong data-start=\"2132\" data-end=\"2144\"\u003eVoltage:\u003c\/strong\u003e \u003cstrong data-start=\"2145\" data-end=\"2169\"\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=\"afgrz4\" data-start=\"2210\" data-end=\"2283\"\u003e\n\u003cp data-start=\"2212\" data-end=\"2283\"\u003e\u003cstrong data-start=\"2212\" data-end=\"2222\"\u003eSpeed:\u003c\/strong\u003e Approx. \u003cstrong data-start=\"2231\" data-end=\"2243\"\u003e1378 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=\"1u58sgb\" data-start=\"2284\" data-end=\"2364\"\u003e\n\u003cp data-start=\"2286\" data-end=\"2364\"\u003e\u003cstrong data-start=\"2286\" data-end=\"2302\"\u003ePower Input:\u003c\/strong\u003e Approx. \u003cstrong data-start=\"2311\" data-end=\"2322\"\u003e0.27 kW\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"76295v\" data-start=\"2365\" data-end=\"2439\"\u003e\n\u003cp data-start=\"2367\" data-end=\"2439\"\u003e\u003cstrong data-start=\"2367\" data-end=\"2379\"\u003eCurrent:\u003c\/strong\u003e \u003cstrong data-start=\"2380\" data-end=\"2397\"\u003e1.3 A \/ 0.8 A\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Direct Duct Supplies","offers":[{"title":"Default Title","offer_id":57353648341317,"sku":null,"price":1024.42,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1037\/5168\/0325\/files\/S_PCRHB4-225N225mmRoof-MountedFan_6f4070a8-fc49-457c-91e4-02a924886d3d.png?v=1773216912","url":"https:\/\/directductsupplies.com\/products\/s-p-crht-4-355-355mm-roof-mounted-fan","provider":"Direct Duct Supplies","version":"1.0","type":"link"}